Patent US2764698A successfully refreshed from Google Patents.
US2764698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system
Assignee: Individual
•
Filing: 1942-11-23
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Granted: 1956-09-25
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Expires: 1962-11-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:16
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/22; F41G7/2226; F41G7/2253; F41G7/2273; F41G7/2293
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1387850A
Cited
US1388932A
Cited
US1747664A
Cited
GB352035A
Cited
US2143933A
Cited
US2166712A
Cited
FR797933A
Cited
US2407936A
Cited
US2357922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |