Patent US2992060A successfully refreshed from Google Patents.
US2992060A
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US
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Correction and end-of-letter marker for dictating machine
Assignee: Dictaphone Corp
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Filing: 1956-09-04
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Granted: 1961-07-11
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Expires: 1976-09-04
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:19
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B27/34; G11B5/00; G11B5/004
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1245588A
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US2292736A
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FR904381A
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US2539874A
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US2644738A
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US2820639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |