Patent US2470628A successfully refreshed from Google Patents.
US2470628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit interrupter
Assignee: Westinghouse Electric Corp
•
Filing: 1944-05-24
•
Granted: 1949-05-17
•
Expires: 1964-05-24
Abstract
No abstract record available.
Inventors
- 👤 Leon R Ludwig
- 👤 Herbert J Webb
- 👤 Benjamin P Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:02
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/04; H01H33/16; H01H33/167
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1717260A
Cited
US1783279A
Cited
US1904577A
Cited
US2049996A
Cited
US2060282A
Cited
US1967989A
Cited
US2133938A
Cited
US2084877A
Cited
US2125525A
Cited
US2290004A
Cited
US2240233A
Cited
US2279536A
Cited
US2280321A
Cited
US2222719A
Cited
US2306186A
Cited
USRE22298E
Cited
US2394086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |