Patent US2784785A successfully refreshed from Google Patents.
US2784785A
Expired / Lapsed
US
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Typewriter controlled tape punch
Assignee: International Business Machines Corp
•
Filing: 1951-10-10
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Granted: 1957-03-12
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Expires: 1971-10-10
Abstract
No abstract record available.
Inventors
- 👤 Charles R Doty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:47
CPC Classifications
B; B41; B41J; B41J3/00; B41J3/44; B41J3/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1843772A
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US2377801A
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US2390486A
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US2540027A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |