US2816191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: Metals and Controls Corp
•
Filing: 1953-11-03
•
Granted: 1957-12-10
•
Expires: 1973-11-03
Abstract
No abstract record available.
Inventors
- 👤 Epstein Henry David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:07
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/24; H01H71/2472; H01H73/00; H01H73/36; H01H73/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US997759A
Cited
AT108039B
Cited
US1950225A
Cited
US1939132A
Cited
US1974488A
Cited
US2091108A
Cited
US2170748A
Cited
US2237705A
Cited
US2650276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |