US2544727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: Individual
•
Filing: 1946-11-07
•
Granted: 1951-03-13
•
Expires: 1966-11-07
Abstract
No abstract record available.
Inventors
- 👤 Rufolo Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:02
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/12; G01R31/18; H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/24; H01H71/2472
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US558687A
Cited
US1288738A
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US1313019A
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US864027A
Cited
US1125520A
Cited
US1022545A
Cited
US1318178A
Cited
DE385386C
Cited
US1663680A
Cited
US1893370A
Cited
US2079577A
Cited
FR801472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |