US3300750A - Reversible plugboard programming panel - Google Patents
Reversible plugboard programming panel Download PDFInfo
- Publication number
- US3300750A US3300750A US368832A US36883264A US3300750A US 3300750 A US3300750 A US 3300750A US 368832 A US368832 A US 368832A US 36883264 A US36883264 A US 36883264A US 3300750 A US3300750 A US 3300750A
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- United States
- Prior art keywords
- panel
- plugboard
- apertures
- contact members
- contact
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R29/00—Coupling parts for selective co-operation with a counterpart in different ways to establish different circuits, e.g. for voltage selection, for series-parallel selection, programmable connectors
Definitions
- Plugboard programming systems and panels were developed to meet the expanding and critical demands of the rapid development of electronics. These products, like electronics itself, are still growing and are still being relined to keep in step with the new developments.
- the program plugboards are removable from the systems, it is to store and retain for later use any previously established switching combinations.
- the applications of these systems are seemingly endless and require a large storage area. Hence, it is desirable to decrease the storage area.
- Another object of the present invention is to provide a programming plugboard which contains an established program on each side which substantially decreases the number of established programming plugboards for reusable purposes.
- a further object of the present invention is the provision of a programming plugboard that is simple in manufacture and usable in existing plugboard systems.
- FIGURE 1 is a perspective view of a plugboard assembly
- FIGURE 2 is a partial perspective and partially eX- ploded view of a programming plugboard
- FIGURE 3 is a partial cross-sectional view taken along the line 3 3 of FIGURE 2;
- FIGURE 4 shows an alternative embodiment of a contact member
- FIGURE 5 is a partial plan view of an alternative embodiment of the present invention.
- a plugboard assembly PB such as completely .disclosed and described in U.S. Patent No. 2,927,295, and which is assigned to the present assignee, includes a stationary plugboard A and a movable plugboard B.
- Plugboard A is provided with rows of contact members 1 which may t-ake any suitable form, but it is preferred that these contact members have the form and characteristics as disclosed in U.S. Patent No. 2,882,508, which is also assigned to the present assignee.
- These plugboards are made of any suitable electrical insulating material and are preferably molded.
- Plugboard B is carried by carrier frame 2 and is moved toward and away from plugboard A via linkage mechanism 3. This plugboard is removable from carrier frame 2. Handle H is located on one end of plugboard B to facilitate the insertion and removal of the plugboard from carrier frame 2 as well as to properly ⁇ orient the plugboard therein. Since the invention is directed to plugboard B, a complete description of the operation of the plugboard assembly can be found in the above-mentioned U.S. Patent No. 2,927,295; however, it is to be understood that this plugboard may be utilized in connection with any conventional plugboard system.
- plugboard B has a frame 4 and intermediate thereto a panel 5 which contains rows of apertures 6 corresponding to the number of rows of contact members 1.
- each aperture in plugboard B when placed in carrier frame 2 is oppositely disposed with respect to a contact member.
- Each contact member is formed from any suit-able metal and comprises a contact section 8, an aperture engaging section 9, spaced anges 10 and 11 and a circumferential groove 12.
- Contact section 8 engages the tab section of the contact member opposite thereto ,and preferably has Ia rounded nose portion 13.
- the diameter of section 9 is slightly less than that of the apertures so that it can easilybe inserted therein.
- the distance between flange 10 and groove 12 is slightly greater than the thickness of panel 5.
- Flange 10 then abuts against one surface of panel 5, and a C-shaped snap ring 14 is disposed within groove 12 in order to lock the contact member in the panel.
- Flange 11 denes an abutting flange.
- section 9 and each aperture 6 may be provided with a at portion which prevents the contact member from turning in the aperture. Obviously other mounting means may be utilized.
- each contact member between anges 10 and 11 as shown in FIGURE 2 may be effected by soldering the conductor means to the appropriate contact members.
- a thin panel 16 of insulating material and Ihaving apertures 17 in correspondence with apertures 6 of panel 5 is fitted on the inside of frame 4.
- contact sections 8 of the contact members extend through corresponding apertures 17 of panels 16 and considerably beyond the planes containing the outer surfaces of frame 4 extending parallel With respect to panel 5.
- Panels 16 engage flanges 11 which limit their inner movement toward panel 5 since the diameters of anges 11 are larger than that of apertures 17, and tlhe thickness of panels 16 is eq-ual to the distance from flanges 11 to the above-mentioned outer surfaces of frame 4.
- panels 16 may be secured to frame 4 as yby glue or some other way as 4by bevelling the edges so that they are press-fitted within frame 4 or in any other suitab-le manner.
- frame 4, panels 5 and 16 form plugboard B which ihas the thickness of conventional pl-ugboards.
- each surface of panel 5(l takes the form of a printed circuit board with circuit paths 18 disposed in the surfaces of panels 5 and interconnecting circular metallic segments 19 disposed at the periphery of certain 4apertures 6 defining the desired program.
- contact members 7 or 7' are disposed in the apertures containing segments 19, ange 10 or ring 14 thereof engages these segments to provide electrical connection therebetween.
- panel 5 may be a laminated structure with circuit paths 18 ilocated on a thin piece of insulating material, covering pieces of the sa-me or similar material thereover and segments 19 or part thereof disposed within apertures 6i.
- leg members 20 Extending outwardly from frame 4 are leg members 20 which are located Itoward each corner thereof. Leg members 20 are located inwardly from the outside edge ,of the frame so that the frame can be inserted within carrier frame 2; however, they are not located too far so that they do not engage any of the tab portions of contact members 1 located in the outer rows. Leg members 20 extend slightly -beyond nose portions 13 of the contact sections of contact members 7 so that, when the plugboard is placed in storage or on a table, the contact sections will be protected as Well as preventing breakage of panels 5 and 5 if and when pressure is applied to the plugboard. Similar leg members 20 are provided on frame 4"of the embodiment of FIGURE 5.
- the leg members may be integrally formed with the frame and panel structure or they may be separate pieces secured to the frame in any suitable manner. Also, the leg members may be one continuous member, or each leg member may extend across its corresponding side or end as one member instead of two. While only one surface of frame 4 and 4 is shown to contain the leg members, it is obvious that both surfaces may contain leg members. Of course, these leg members need not be provided.
- a plugboard comprising a panel section having apertures, contact members in some of sai-d apertures and extending outwardly from one side of said panel, conductive means interconnecting selected ones of said con'- tact members to define a program, further contact members in some of said apertures and extending outwardly from the other side of said panel, further conductive means interconnecting selected ones of said further contact members to dene another program, said contact members having ilange means, additional panel sections disposed on each side of said iirst mentioned panel in enga-gement with said iiange means, said additional panel sections having apertures in alignment wit-l1 the apertures of said iirst mentioned panel so that the contact members in these last mentioned apertures extend therethrough.
- a panel member having rows of apertures therein, a first and second plurality of contact members secured within certain ones of said apertures, each said contact member having a contact enga-ging portion and a conductor receiving portion, each said iirst plurality having their contact engaging portions extending from a iirst side of said panel and their conductor receiving portions extending from a second side of said panel, each said second plurality having their contact engaging portions extending from said second side of said panel and their conductor receiving portions extending from said first side of said panel, iirst conductor mea-ns disposed on said second side of said panel and connecting selected ones of said first plurality of contact members, and second conductor means disposed on said first side of said panel and connecting selected ones of said second plurality of contact members, whereby each said side of said panel contains a distinct programming array to thereby present a diierent program dependent upon the orientation of said panel within said plugboard assembly.
- a panel member as set forth in claim 2 further cornprising means for locking sai-d contact members within said apertures.
- a panel member as set forth in claim 2 further comprising ⁇ rneans provided on each side of said panel member to protect said iirstand second conductor means.
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- Connector Housings Or Holding Contact Members (AREA)
Description
Jan. 24, 1967 D. R. HARNER ETAL 3,300,750
REVERSIBLE PLUGBOARD PROGRAMMING PANEL A2 Sheets-Shea Filed May 20, 1964 Jan- 24, 1967 D. R. HARNER ETAL 3,300,750
REVERSIBLE PLUGBOARD PROGRAMMING PANEL Filed May 20, 1964 2 Sheets-Sheet 2 IN VENTO/2S DONALD Rmx-mnu HARNER MmHAEL. ?|.MQA
United States Patent Olice 3,300,750 Patented Jan. 24, 1967 3,300,750 REVERSIBLE PLUGBOARD PROGRAMMING PANEL Donald Richard Hamer and Michael Plaxa, Camp Hill, Pa., assignors to AMP Incorporated, Harrisburg, Pa. Filed May 20, 1964, Ser. No. 368,832 6 Claims. (Cl. 339-18) This invention relates to plugboard programing panels for use in a plugboard system.
Plugboard programming systems and panels were developed to meet the expanding and critical demands of the rapid development of electronics. These products, like electronics itself, are still growing and are still being relined to keep in step with the new developments.
Basically, these systems and panels are general purpose, manually-operated switches which permit, through proper patchcord =and/ or patchboard selection, nearly innite switching combinations. Moreover, because the program plugboards are removable from the systems, it is to store and retain for later use any previously established switching combinations. The applications of these systems are seemingly endless and require a large storage area. Hence, it is desirable to decrease the storage area.
It is, therefore, a primary .object of the present invention to provide a programming plugboard which is capable of reducing storage area.
Another object of the present invention is to provide a programming plugboard which contains an established program on each side which substantially decreases the number of established programming plugboards for reusable purposes.
A further object of the present invention is the provision of a programming plugboard that is simple in manufacture and usable in existing plugboard systems.
Other objects and attainments of the present invention will become apparent to those skilled in the art upon a reading of the following detailed description when taken in conjunction with the drawings in which there are shown and described illustrative embodiments of the invention; it is to be understood, however, that these embodiments are not intended to be exhaustive nor limiting of the invention but are given for purposes of illustration and principles thereof and the manner of applying them in practical use so that they may modify them in various forms, each as may be best suited to the conditions of a particular use.
In the drawings:
FIGURE 1 is a perspective view of a plugboard assembly;
FIGURE 2 is a partial perspective and partially eX- ploded view of a programming plugboard;
FIGURE 3 is a partial cross-sectional view taken along the line 3 3 of FIGURE 2;
FIGURE 4 shows an alternative embodiment of a contact member; and
FIGURE 5 is a partial plan view of an alternative embodiment of the present invention.
A plugboard assembly PB, such as completely .disclosed and described in U.S. Patent No. 2,927,295, and which is assigned to the present assignee, includes a stationary plugboard A and a movable plugboard B. Plugboard A is provided with rows of contact members 1 which may t-ake any suitable form, but it is preferred that these contact members have the form and characteristics as disclosed in U.S. Patent No. 2,882,508, which is also assigned to the present assignee. These plugboards are made of any suitable electrical insulating material and are preferably molded.
Plugboard B is carried by carrier frame 2 and is moved toward and away from plugboard A via linkage mechanism 3. This plugboard is removable from carrier frame 2. Handle H is located on one end of plugboard B to facilitate the insertion and removal of the plugboard from carrier frame 2 as well as to properly `orient the plugboard therein. Since the invention is directed to plugboard B, a complete description of the operation of the plugboard assembly can be found in the above-mentioned U.S. Patent No. 2,927,295; however, it is to be understood that this plugboard may be utilized in connection with any conventional plugboard system.
Turning now to FIGURES 2 and 3, plugboard B has a frame 4 and intermediate thereto a panel 5 which contains rows of apertures 6 corresponding to the number of rows of contact members 1. Of course, each aperture in plugboard B when placed in carrier frame 2 is oppositely disposed with respect to a contact member.
Contact members 7 are placed in apertures 6 in accordance with a program. Each contact member is formed from any suit-able metal and comprises a contact section 8, an aperture engaging section 9, spaced anges 10 and 11 and a circumferential groove 12. Contact section 8 engages the tab section of the contact member opposite thereto ,and preferably has Ia rounded nose portion 13. The diameter of section 9 is slightly less than that of the apertures so that it can easilybe inserted therein. The distance between flange 10 and groove 12 is slightly greater than the thickness of panel 5. Flange 10 then abuts against one surface of panel 5, and a C-shaped snap ring 14 is disposed within groove 12 in order to lock the contact member in the panel. Other variations for locking the contact member in the panel can, of course, be visualized. Flange 11 denes an abutting flange. If desired, section 9 and each aperture 6 may be provided with a at portion which prevents the contact member from turning in the aperture. Obviously other mounting means may be utilized.
As can be discerned, some contact members 7 point outwardly from different apertures of one side of panel 5 while others point outwardly from different apertures of the other side. This constitutes a program on each side of the plugboard. In order to complete the program on each side of the plugboard, conductor means 15 is connected between selected contact members at the 'area of.
each contact member between anges 10 and 11 as shown in FIGURE 2. Such connection may be effected by soldering the conductor means to the appropriate contact members.
After the contact members have been interconnected, a thin panel 16 of insulating material and Ihaving apertures 17 in correspondence with apertures 6 of panel 5 is fitted on the inside of frame 4. As can be seen from FIG- URE 3, contact sections 8 of the contact members extend through corresponding apertures 17 of panels 16 and considerably beyond the planes containing the outer surfaces of frame 4 extending parallel With respect to panel 5.
It is not necessary that panels 16 lbe used; however, these pane-ls are desirable because they protect conductor means 15 connected between the contact members. Once plugboard B has been completed -as by securing contact members 7 in their programmed locations, conductor means 15 connected to the proper contact members and panels 16 secured in position, there is now presented a plugboard which contains established programs on each side thereof which can be used over and over again and stored when not in use.
It is possible that the programs on both sides of the plugboard will use one or more common apertures. If this is the case, then a contact member 7', as illustrated in FIGURE 4, would be placed in these apertures since flange 11 has a contact section 8 extending outwardly therefrom in a direction opposite to that of contact section 8. One end of conductor means 15 would be connected toward the inn-er end of contact section 8 of contact member 7' between panels 5 and 16 whenever this contact y member is used in the programs of both sides of the plugboard. Accordingly, when contact member 7 is used, one conductor means 15 is connected to the area between flanges 10 and 11 on one side of panel 5 and another conductor means is connected close to the inner end of contact sect-ion 8 on the other side of panel 5.
An alternative embodiment for interconnecting the contact members is illustrated in FIGURE 5. In this embodiment, each surface of panel 5(l takes the form of a printed circuit board with circuit paths 18 disposed in the surfaces of panels 5 and interconnecting circular metallic segments 19 disposed at the periphery of certain 4apertures 6 defining the desired program. When contact members 7 or 7' are disposed in the apertures containing segments 19, ange 10 or ring 14 thereof engages these segments to provide electrical connection therebetween.
Since no conductor means are connected to the contact members in the embodiment of FIGURE 5 as in that of FIGURES 2 and 3, panels 16 on each side of frame 4' are not necessaryhowever, these may be applied thereto, if desired. Alternatively, panel 5 may be a laminated structure with circuit paths 18 ilocated on a thin piece of insulating material, covering pieces of the sa-me or similar material thereover and segments 19 or part thereof disposed within apertures 6i.
Other structures similar to the above-described plugboards and contact members can be visualized which will perform the same function Without departing from the spirit of the invention.
Extending outwardly from frame 4 are leg members 20 which are located Itoward each corner thereof. Leg members 20 are located inwardly from the outside edge ,of the frame so that the frame can be inserted within carrier frame 2; however, they are not located too far so that they do not engage any of the tab portions of contact members 1 located in the outer rows. Leg members 20 extend slightly -beyond nose portions 13 of the contact sections of contact members 7 so that, when the plugboard is placed in storage or on a table, the contact sections will be protected as Well as preventing breakage of panels 5 and 5 if and when pressure is applied to the plugboard. Similar leg members 20 are provided on frame 4"of the embodiment of FIGURE 5.
The leg members may be integrally formed with the frame and panel structure or they may be separate pieces secured to the frame in any suitable manner. Also, the leg members may be one continuous member, or each leg member may extend across its corresponding side or end as one member instead of two. While only one surface of frame 4 and 4 is shown to contain the leg members, it is obvious that both surfaces may contain leg members. Of course, these leg members need not be provided.
As can be discerned, there has been disclosed a plugboard having established programs on each side which can be stored for future use.
It will, therefore, be apreciated that the aforementioned and other desirable objects have been achieved; however, it should be emphasized that the particular embodiments of the invention, which are shown and `described herein, are intended as merely illustrative and not as restrictive of the invention.
What is claimed is:
1. A plugboard comprising a panel section having apertures, contact members in some of sai-d apertures and extending outwardly from one side of said panel, conductive means interconnecting selected ones of said con'- tact members to define a program, further contact members in some of said apertures and extending outwardly from the other side of said panel, further conductive means interconnecting selected ones of said further contact members to dene another program, said contact members having ilange means, additional panel sections disposed on each side of said iirst mentioned panel in enga-gement with said iiange means, said additional panel sections having apertures in alignment wit-l1 the apertures of said iirst mentioned panel so that the contact members in these last mentioned apertures extend therethrough.
2. In a plugboard for use in a plugboard assembly, a panel member having rows of apertures therein, a first and second plurality of contact members secured within certain ones of said apertures, each said contact member having a contact enga-ging portion and a conductor receiving portion, each said iirst plurality having their contact engaging portions extending from a iirst side of said panel and their conductor receiving portions extending from a second side of said panel, each said second plurality having their contact engaging portions extending from said second side of said panel and their conductor receiving portions extending from said first side of said panel, iirst conductor mea-ns disposed on said second side of said panel and connecting selected ones of said first plurality of contact members, and second conductor means disposed on said first side of said panel and connecting selected ones of said second plurality of contact members, whereby each said side of said panel contains a distinct programming array to thereby present a diierent program dependent upon the orientation of said panel within said plugboard assembly.
3. A panel member as set forth in claim 2 further cornprising means for locking sai-d contact members within said apertures.
4. A panel member as set forth in claim 2 further comprising `rneans provided on each side of said panel member to protect said iirstand second conductor means.
l5. A-panel member as set forth in claim 2 wherein at least one of said contact members -is com-mon to both said programs, said common contact member having a contact engaging portion extending outwardly from both sides of said panel member.
6. A panel member as set forth in claim 2 wherein said rst and second conductor means comprise printed circuitry disposed on opposite sides of said panel member.
References Cited by the Examiner UNITED STATES PATENTS 2,111,118 3/1938 Lake 339--42 3,002,170 9/1961 Clouthier 339-18 X 3,179,913 4/1965 Mittler et al. 339-18 EDWARD C. ALLEN, Primary Examiner.
PATRICK A. CLIFFORD, Assistant Examiner.
Claims (1)
1. A PLUGBOARD COMPRISING A PANEL SECTION HAVING APERTURES, CONTACT MEMBERS IN SOME OF SAID APERTURES AND EXTENDING OUTWARDLY FROM ONE SIDE OF SAID PANEL, CONDUCTIVE MEANS INTERCONNECTING SELECTED ONES OF SAID CONTACT MEMBERS TO DEFINE A PROGRAM, FURTHER CONTACT MEMBERS IN SOME OF SAID APERTURES AND EXTENDING OUTWARDLY FROM THE OTHER SIDE OF SAID PANEL, FURTHER CONDUCTIVE MEANS INTERCONNECTING SELECTED ONES OF SAID FURTHER CONTACT MEMBERS TO DEFINE ANOTHER PROGRAM, SAID CONTACT MEMBERS HAVING FLANGE MEANS, ADDITIONAL PANEL SECTIONS DISPOSED ON EACH SIDE OF SAID FIRST MENTIONED PANEL IN ENGAGEMENT WITH SAID FLANGE MEANS, SAID ADDITIONAL PANEL SECTIONS HAVING APERTURES IN ALIGNMENT WITH THE APERTURES OF SAID FIRST MENTIONED PANEL SO THAT THE CONTACT MEMBERS IN THESE LAST MENTIONED APERTURES EXTEND THERETHROUGH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US368832A US3300750A (en) | 1964-05-20 | 1964-05-20 | Reversible plugboard programming panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US368832A US3300750A (en) | 1964-05-20 | 1964-05-20 | Reversible plugboard programming panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3300750A true US3300750A (en) | 1967-01-24 |
Family
ID=23452937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US368832A Expired - Lifetime US3300750A (en) | 1964-05-20 | 1964-05-20 | Reversible plugboard programming panel |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3300750A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3778751A (en) * | 1971-12-23 | 1973-12-11 | Honeywell Inf Systems | Apparatus for providing improved identification of electrical terminals |
| US3955868A (en) * | 1974-07-18 | 1976-05-11 | Bell Telephone Laboratories, Incorporated | Connector for telephone main distributing frame |
| US4122313A (en) * | 1977-06-06 | 1978-10-24 | Porta Systems Corp. | Telephone connector cutover block |
| US4239317A (en) * | 1979-01-02 | 1980-12-16 | Bunker Ramo Corporation | Electrical connector |
| US4239320A (en) * | 1979-01-02 | 1980-12-16 | Bunker Ramo Corporation | Electrical connector |
| US4626053A (en) * | 1984-05-21 | 1986-12-02 | Banner Engineering Corp. | Sensing devices with modular interconnection and programming |
| US7016199B2 (en) * | 2003-08-19 | 2006-03-21 | Mac Panel Company | Receiver with sliding hanger structure |
| US20090120288A1 (en) * | 2007-11-05 | 2009-05-14 | Lackner Klaus S | Removal of carbon dioxide from air |
| US10938429B1 (en) * | 2019-04-30 | 2021-03-02 | Mac Panel Company | Universal receiver |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2111118A (en) * | 1935-03-09 | 1938-03-15 | Ibm | Plugboard |
| US3002170A (en) * | 1959-12-21 | 1961-09-26 | Robert G Clouthier | Electronic data processing machine control panel and electrical contact therefor |
| US3179913A (en) * | 1962-01-25 | 1965-04-20 | Ind Electronic Hardware Corp | Rack with multilayer matrix boards |
-
1964
- 1964-05-20 US US368832A patent/US3300750A/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2111118A (en) * | 1935-03-09 | 1938-03-15 | Ibm | Plugboard |
| US3002170A (en) * | 1959-12-21 | 1961-09-26 | Robert G Clouthier | Electronic data processing machine control panel and electrical contact therefor |
| US3179913A (en) * | 1962-01-25 | 1965-04-20 | Ind Electronic Hardware Corp | Rack with multilayer matrix boards |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3778751A (en) * | 1971-12-23 | 1973-12-11 | Honeywell Inf Systems | Apparatus for providing improved identification of electrical terminals |
| US3955868A (en) * | 1974-07-18 | 1976-05-11 | Bell Telephone Laboratories, Incorporated | Connector for telephone main distributing frame |
| US4122313A (en) * | 1977-06-06 | 1978-10-24 | Porta Systems Corp. | Telephone connector cutover block |
| US4239317A (en) * | 1979-01-02 | 1980-12-16 | Bunker Ramo Corporation | Electrical connector |
| US4239320A (en) * | 1979-01-02 | 1980-12-16 | Bunker Ramo Corporation | Electrical connector |
| US4626053A (en) * | 1984-05-21 | 1986-12-02 | Banner Engineering Corp. | Sensing devices with modular interconnection and programming |
| US7016199B2 (en) * | 2003-08-19 | 2006-03-21 | Mac Panel Company | Receiver with sliding hanger structure |
| US20090120288A1 (en) * | 2007-11-05 | 2009-05-14 | Lackner Klaus S | Removal of carbon dioxide from air |
| US10938429B1 (en) * | 2019-04-30 | 2021-03-02 | Mac Panel Company | Universal receiver |
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