US2835737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone answering and recording devices
Assignee: TELEPHONE ANSWERING AND RECORD
•
Filing: 1953-02-11
•
Granted: 1958-05-20
•
Expires: 1973-02-11
Abstract
No abstract record available.
Inventors
- 👤 John J Shively
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:27
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/64; H04M1/65
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2289555A
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US2359489A
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US2393272A
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US2507385A
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US2490771A
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US2537407A
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US2537406A
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US2549548A
Cited
US2673242A
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US2665337A
Cited
US2761899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |