NL63840C - - Google Patents
Info
- Publication number
- NL63840C NL63840C NL63840DA NL63840C NL 63840 C NL63840 C NL 63840C NL 63840D A NL63840D A NL 63840DA NL 63840 C NL63840 C NL 63840C
- Authority
- NL
- Netherlands
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
- B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
- B06B1/161—Adjustable systems, i.e. where amplitude or direction of frequency of vibration can be varied
- B06B1/162—Making use of masses with adjustable amount of eccentricity
- B06B1/165—Making use of masses with adjustable amount of eccentricity with fluid masses or the like
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mechanical Engineering (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL655682X | 1945-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL63840C true NL63840C (th) |
Family
ID=19795222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL63840D NL63840C (th) | 1945-09-03 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2574224A (th) |
| FR (1) | FR959151A (th) |
| GB (1) | GB655682A (th) |
| NL (1) | NL63840C (th) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL141296B (nl) * | 1948-07-02 | Thomson Houston Comp Francaise | Dopplerradarstelsel. | |
| NL75989C (th) * | 1949-01-17 | |||
| BE508995A (th) * | 1951-03-16 | |||
| US2714629A (en) * | 1951-05-19 | 1955-08-02 | Nederlanden Staat | Marking circuit |
| US3293370A (en) * | 1963-12-30 | 1966-12-20 | American Telephone & Telegraph | Make busy line circuit for key telephone systems |
| US3673339A (en) * | 1970-07-22 | 1972-06-27 | Bell Telephone Labor Inc | Artificial line busy circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1560725A (en) * | 1922-01-25 | 1925-11-10 | Stromberg Carlson Telephone | Automatic telephone system |
| NL30173C (th) * | 1927-01-31 | |||
| USRE22475E (en) * | 1940-06-22 | 1944-05-09 | Telephone system | |
| US2312427A (en) * | 1941-01-11 | 1943-03-02 | Associated Electric Lab Inc | Automatic switching apparatus |
| US2322864A (en) * | 1941-03-29 | 1943-06-29 | Kellogg Switchboard & Supply | Trouble cutoff system |
-
0
- NL NL63840D patent/NL63840C/xx active
- FR FR959151D patent/FR959151A/fr not_active Expired
-
1947
- 1947-07-30 US US767529A patent/US2574224A/en not_active Expired - Lifetime
- 1947-12-30 GB GB34847/47A patent/GB655682A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2574224A (en) | 1951-11-06 |
| GB655682A (en) | 1951-08-01 |
| FR959151A (th) | 1950-03-25 |