Patent US3012713A successfully refreshed from Google Patents.
US3012713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Typewriting calculating machine
Assignee: International Business Machines Corp
•
Filing: 1957-05-17
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Granted: 1961-12-12
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Expires: 1977-05-17
Abstract
No abstract record available.
Inventors
- 👤 Richard K Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:59
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/491; G06F7/4915; G06F15/00; G06F15/04; G06F3/00; G06F3/01; G06F3/02; G06F3/0227; G06Q; G06Q40/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2403005A
Cited
US2540029A
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US2609143A
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US2717733A
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US2652196A
Cited
US2761621A
Cited
GB770952A
Cited
US2883106A
Cited
US2800539A
Cited
US2853696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |