US3176071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic sound transmission
Assignee: Individual
•
Filing: 1960-12-23
•
Granted: 1965-03-30
•
Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 William E Tilton
- 👤 Edward G Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:17
CPC Classifications
H; H04; H04M; H04M19/00; H04M19/02; H04M19/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN ELECTRONIC SOUND TRANSMISSION SYSTEM COMPRISING A CURRENT SOURCE WITH TWO POLES, A LOUDSPEAKER, A TRANSISTOR INCLUDING A BASE, AN EMITTER, AND A COLLECTOR, A FIRST CONDUCTOR JOINING ONE POLE OF SAID SOURCE TO SAID BASE, A MICROPHONE OF A CARBON GRANULE TYPE OPERATIVELY INTERPOSED IN SAID CONDUCTOR SERIES WITH THE BASE AND PROPORTIONED FOR INSERTION BENEATH AND ADJACENT TO A TELEPHONE STAND HAVING A SOUND SIGNAL WITH MEANS FOR SOUNDING SAID SIGNAL TO INDICATE AN INCOMING TELEPHONE CALL, A SECOND CONDUCTOR OPERATIVELY CONNECTING SAID POLE TO THE COLLECTOR, MEANS INTERPOSED IN THE SECOND CONDUCTOR IN SERIES WITH THE COLLECTOR TO ACTIVATE THE LOUDSPEAKER, AND A THIRD CONDUCTOR JOINING THE OTHER POLE OF THE SOURCE TO SAID EMITTER.
Claim 2
Dependent Claim
118 words
AN ELECTRONIC SOUND TRANSMISSION SYSTEM COMPRISING A CURRENT SOURCE WITH TWO POLES, A LOUDSPEAKER, A TRANSISTOR INCLUDING A BASE, AN EMITTER, AND A COLLECTOR, A FIRST CONDUCTOR JOINING ONE POLE OF SAID SOURCE TO SAID BASE, A MICROPHONE OF A CARBON GRANULE TYPE OPERATIVELY INTERPOSED IN SAID CONDUCTOR SERIES WITH THE BASE AND PROPORTIONED FOR INSERTION BENEATH AND ADJACENT TO A TELEPHONE STAND HAVING A SOUND SIGNAL WITH MEANS FOR SOUNDING SAID SIGNAL TO INDICATE AN INCOMING TELEPHONE CALL, A SECOND CONDUCTOR OPERATIVELY CONNECTING SAID POLE TO THE COLLECTOR, MEANS INTERPOSED IN THE SECOND CONDUCTOR IN SERIES WITH THE COLLECTOR TO ACTIVATE THE LOUDSPEAKER, AND A THIRD CONDUCTOR JOINING THE OTHER POLE OF THE SOURCE TO SAID EMITTER.
References Cited (Backward Citations)
US2761916A
Cited
US2762874A
Cited
US2929877A
Cited
US2809240A
Cited
US2897720A
Cited
US2918573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |