US2774422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time delay mechanism
Assignee: International Standard Electric Corp
•
Filing: 1953-09-14
•
Granted: 1956-12-18
•
Expires: 1973-09-14
Abstract
No abstract record available.
Inventors
- 👤 Fielding Eric Clay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:49
CPC Classifications
H; H01; H01H; H01H43/00; H01H43/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1893223A
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US1931291A
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US1973123A
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US2007769A
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US2108931A
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US2130405A
Cited
US2147449A
Cited
US2120787A
Cited
US2186815A
Cited
US2294759A
Cited
US2312077A
Cited
US2396523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |