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Patent US3028085A successfully refreshed from Google Patents.
US3028085A
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Calculating apparatus
Assignee: Clary Corp
•
Filing: 1957-07-16
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Granted: 1962-04-03
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Expires: 1977-07-16
Abstract
No abstract record available.
Inventors
- 👤 John F Donan
- 👤 Ralph R Powell
- 👤 Chris A Christoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:14
CPC Classifications
G; G06; G06F; G06F15/00; G06F15/02; G06F15/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2651462A
Cited
GB678427A
Cited
US2770797A
Cited
US2705108A
Cited
GB749207A
Cited
FR1137492A
Cited
US2826139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |