Patent US2622169A successfully refreshed from Google Patents.
US2622169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit breaker
Assignee: John B. Pierce Laboratory
•
Filing: 1950-05-17
•
Granted: 1952-12-16
•
Expires: 1970-05-17
Abstract
No abstract record available.
Inventors
- 👤 John B Cataldo
- 👤 Elbert De F Tidd
- 👤 Albert N Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:09
CPC Classifications
H; H01; H01H; H01H77/00; H01H77/02; H01H77/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2293179A
Cited
US2425717A
Cited
US2399406A
Cited
US2498039A
Cited
US2543040A
Cited
US2508637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |