USRE21848E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric circuit breaker
Assignee: —
•
Filing: —
•
Granted: 1941-07-01
•
Expires: 1958-07-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:54
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/70; H01H33/88; H01H33/90; H01H1/00; H01H1/50; H01H2001/508
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-06-30 | 1944-12-30 | 1945-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-06-30 | 1948-12-30 | 1949-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-06-30 | 1952-12-30 | 1953-07-01 | $7700.00 | Window Closed / Lapsed |