US3180937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone amplifier
Assignee: Individual
•
Filing: 1962-11-08
•
Granted: 1965-04-27
•
Expires: 1982-11-08
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Moser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:17
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/60; H04M1/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A TELEPHONE AMPLIFIER FOR ATTACHMENT TO THE RECEIVER OF A TELEPHONE COMPRISING: A FRUSTO-CONICAL COVER ENCLOSING ONE END OF SAID AMPLIFIER, SHAPED TO FIT SNUGLY AGAINST A COMPLEMENTARY SURFACE OF SAID RECEIVER; A HOUSING ATTACHED TO SAID COVER AND HAVING A PERFORATE FACE OPPOSITE SAID COVER ADAPTED FOR PLACEMENT AGAINST THE EAR; MEANS FOR DETACHABLY SECURING SAID FRUSTO-CONICAL COVER TO SAID RECEIVER, SAID DETACHING MEANS COMPRISING A BAND SECURED AT EACH END TO SAID HOUSING AND MOVABLE INTO ENGAGEMENT WITH SAID TELEPHONE; A SUBSTANTIALLY FLAT OVAL PICKUP COIL POSITIONED WITHIN SAID HOUSING ADJACENT TO, AND BENT TO CONFORM TO, THE INTERIOR SURFACE OF SAID COVER; A TRANSISTOR AMPLIFIER CIRCUIT MOUNTED WITHIN SAID HOUSING AND HAVING ITS INPUT CONNECTED TO SAID COIL; A LOUDSPEAKER CONNECTED TO THE OUTPUT OF SAID AMPLIFIER CIRCUIT; AND MEANS EXTERNALLY ACCESSIBLE OF SAID HOUSING FOR ADJUSTING THE GAIN OF SAID AMPLIFIER CIRCUIT TO ADJUST THE LEVEL OF THE LOUDSPEAKER OUTPUT.
Claim 2
Dependent Claim
154 words
A TELEPHONE AMPLIFIER FOR ATTACHMENT TO THE RECEIVER OF A TELEPHONE COMPRISING: A FRUSTO-CONICAL COVER ENCLOSING ONE END OF SAID AMPLIFIER, SHAPED TO FIT SNUGLY AGAINST A COMPLEMENTARY SURFACE OF SAID RECEIVER; A HOUSING ATTACHED TO SAID COVER AND HAVING A PERFORATE FACE OPPOSITE SAID COVER ADAPTED FOR PLACEMENT AGAINST THE EAR; MEANS FOR DETACHABLY SECURING SAID FRUSTO-CONICAL COVER TO SAID RECEIVER, SAID DETACHING MEANS COMPRISING A BAND SECURED AT EACH END TO SAID HOUSING AND MOVABLE INTO ENGAGEMENT WITH SAID TELEPHONE; A SUBSTANTIALLY FLAT OVAL PICKUP COIL POSITIONED WITHIN SAID HOUSING ADJACENT TO, AND BENT TO CONFORM TO, THE INTERIOR SURFACE OF SAID COVER; A TRANSISTOR AMPLIFIER CIRCUIT MOUNTED WITHIN SAID HOUSING AND HAVING ITS INPUT CONNECTED TO SAID COIL; A LOUDSPEAKER CONNECTED TO THE OUTPUT OF SAID AMPLIFIER CIRCUIT; AND MEANS EXTERNALLY ACCESSIBLE OF SAID HOUSING FOR ADJUSTING THE GAIN OF SAID AMPLIFIER CIRCUIT TO ADJUST THE LEVEL OF THE LOUDSPEAKER OUTPUT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-26 | 1968-10-26 | 1969-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-26 | 1972-10-26 | 1973-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-26 | 1976-10-26 | 1977-04-27 | $7700.00 | Window Closed / Lapsed |