BE476996A - - Google Patents
Info
- Publication number
- BE476996A BE476996A BE476996DA BE476996A BE 476996 A BE476996 A BE 476996A BE 476996D A BE476996D A BE 476996DA BE 476996 A BE476996 A BE 476996A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/30—Devices which can set up and transmit only one digit at a time
- H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49908—Joining by deforming
- Y10T29/49915—Overedge assembling of seated part
- Y10T29/49922—Overedge assembling of seated part by bending over projecting prongs
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US706608A US2448647A (en) | 1946-10-30 | 1946-10-30 | Calling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE476996A true BE476996A (it) |
Family
ID=24838325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE476996D BE476996A (it) | 1946-10-30 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2448647A (it) |
| BE (1) | BE476996A (it) |
| FR (1) | FR954562A (it) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2563581A (en) * | 1951-08-07 | Finger-wheel operated call trans |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1360113A (en) * | 1920-11-23 | kaisling | ||
| US1642822A (en) * | 1924-05-15 | 1927-09-20 | Automatic Electric Inc | Calling device |
| US1954515A (en) * | 1931-12-03 | 1934-04-10 | Adolph I Blanc | Microphone casing |
-
0
- BE BE476996D patent/BE476996A/xx unknown
- FR FR954562D patent/FR954562A/fr not_active Expired
-
1946
- 1946-10-30 US US706608A patent/US2448647A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR954562A (it) | 1950-01-03 |
| US2448647A (en) | 1948-09-07 |