US2453546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: Metals and Controls Corp
•
Filing: 1944-10-30
•
Granted: 1948-11-09
•
Expires: 1964-10-30
Abstract
No abstract record available.
Inventors
- 👤 Ezra S Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:21
CPC Classifications
H; H01; H01H; H01H77/00; H01H77/02; H01H77/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US650416A
Cited
US1098849A
Cited
US2150012A
Cited
US2184372A
Cited
US2371672A
Cited
US2357151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-09 | 1952-05-10 | 1952-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-09 | 1956-05-10 | 1956-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-09 | 1960-05-10 | 1960-11-09 | $7700.00 | Window Closed / Lapsed |