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US3050585A
Expired / Lapsed
US
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Recording and reproducing mechanism of a telephone answering device
Assignee: ELECTRONIC SECRETARY IND Inc
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Filing: 1958-05-12
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Granted: 1962-08-21
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Expires: 1978-05-12
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Zimmermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:04
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/64; H04M1/65; H04M1/6515
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2380799A
Cited
US2519568A
Cited
US2784254A
Cited
US2737646A
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US2936336A
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US2835737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-20 | 1966-02-19 | 1966-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-20 | 1970-02-19 | 1970-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-20 | 1974-02-19 | 1974-08-21 | $7700.00 | Window Closed / Lapsed |