Patent US2864554A successfully refreshed from Google Patents.
US2864554A
Expired / Lapsed
US
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Printing calculating apparatus switch means
Assignee: —
•
Filing: —
•
Granted: 1958-12-16
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Expires: 1975-12-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:58
CPC Classifications
G; G06; G06F; G06F15/00; G06F15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1932220A
Cited
US1998355A
Cited
US2771242A
Cited
US1899936A
Cited
US2285353A
Cited
US2084445A
Cited
US2403005A
Cited
US2717733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |