US3254160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulated gain telephone handset receiver amplifier
Assignee: Gai Tronics Corp
•
Filing: 1962-12-27
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Granted: 1966-05-31
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Expires: 1982-12-27
Abstract
No abstract record available.
Inventors
- 👤 Paul B Day
- 👤 Joseph J Radomski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:13
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/60; H04M1/6016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A TELEPHONE HANDSET COMPRISING A HANDLE, A TRANSMITTER AT ONE END AND RECEIVER AT THE OTHER END OF SAID HANDLE, AN AMPLIFIER CONTAINED WITHIN SAID HANDLE AND CONNECTED BETWEEN SAID TRANSMITTER AND RECEIVER, VOLTAGE REGULATING DIODE MEANS FOR THE HIGH CONDUCTIVE TYPE CONNECTED BETWEEN SAID TRANSMITTER AND AMPLIFIER, SAID AMPLIFIER BEING ENERGIZED BY A SOURCE OF D.C. POWER OBTAINED FROM THE TELEPHONE LINE CURRENT, SAID AMPLIFIER HAVING A SUBSTANTIALLY CONSTANT GAIN THROUGHOUT A WIDE
Claim 2
Dependent Claim
74 words
A TELEPHONE HANDSET COMPRISING A HANDLE, A TRANSMITTER AT ONE END AND RECEIVER AT THE OTHER END OF SAID HANDLE, AN AMPLIFIER CONTAINED WITHIN SAID HANDLE AND CONNECTED BETWEEN SAID TRANSMITTER AND RECEIVER, VOLTAGE REGULATING DIODE MEANS FOR THE HIGH CONDUCTIVE TYPE CONNECTED BETWEEN SAID TRANSMITTER AND AMPLIFIER, SAID AMPLIFIER BEING ENERGIZED BY A SOURCE OF D.C. POWER OBTAINED FROM THE TELEPHONE LINE CURRENT, SAID AMPLIFIER HAVING A SUBSTANTIALLY CONSTANT GAIN THROUGHOUT A WIDE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |