US2983794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recorder-reproducer apparatus
Assignee: Webster Electric Co Inc
•
Filing: 1954-06-23
•
Granted: 1961-05-09
•
Expires: 1974-06-23
Abstract
No abstract record available.
Inventors
- 👤 George B Shields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:15
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/26; G11B15/28; G11B15/44; G11B15/442; G11B25/00; G11B25/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2262731A
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US2241013A
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US2365691A
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US2538893A
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US2668674A
Cited
US2686637A
Cited
US2645495A
Cited
US2717282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |