Patent US2910240A successfully refreshed from Google Patents.
US2910240A
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Counting register employing plus-andminus adder means
Assignee: International Business Machines Corp
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Filing: 1954-09-28
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Granted: 1959-10-27
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Expires: 1974-09-28
Abstract
No abstract record available.
Inventors
- 👤 Byron L Havens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:10
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/491; G06F7/492; G06F7/493; G06F7/494; H; H03; H03K; H03K21/00; H03K23/00; H03K23/82; G06F2207/00; G06F2207/492; G06F2207/4924
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735005A
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US2656106A
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US2536916A
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US2534287A
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US2539623A
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US2500294A
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US2656460A
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US2671171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |