US2772330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensitive pressure switch
Assignee: Individual
•
Filing: 1952-11-17
•
Granted: 1956-11-27
•
Expires: 1972-11-17
Abstract
No abstract record available.
Inventors
- 👤 Roger K Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:47
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US466644A
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US817009A
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US866377A
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US1141158A
Cited
US1078595A
Cited
US1108750A
Cited
US1619010A
Cited
US2075774A
Cited
US2085198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |