Patent US2689652A successfully refreshed from Google Patents.
Patent US3239609A successfully refreshed from Google Patents.
US3239609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coin telephone control apparatus
Assignee: AT&T Inc
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Filing: 1962-09-18
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Granted: 1966-03-08
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Expires: 1982-09-18
Abstract
No abstract record available.
Inventors
- 👤 Ernest R Andregg
- 👤 Kennard E Voyles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:03
CPC Classifications
H; H04; H04M; H04M17/00; H04M17/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
72 words
IN A COIN TELEPHONE, IN COMBINATION, MEANS FOR STORING INFORMATION INDICATIVE OF THE VALUE OF COINS DESPOSITED IN SAID TELEPHONE, MEANS RESPONSIVE TO THE DESPOSIT OF COINS EQUAL IN VALUE TO A PRESELECTED INITIAL RATE FOR READING OUT SAID INFORMATION, AND MEANS RESPONSIVE TO SAID READ OUT MEANS FOR GENERATING TRANSMISSION TONE PULSE SIGNALS INDICATIVE IN TERMS OF NUMBER AND IN TERMS OF PULSE RESPETITION RATE OF THE VALVE OF DEPOSITED COINS.
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |