US2997564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit interrupter
Assignee: Westinghouse Electric Corp
•
Filing: 1958-09-19
•
Granted: 1961-08-22
•
Expires: 1978-09-19
Abstract
No abstract record available.
Inventors
- 👤 Benjamin P Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:27
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/008; H01B; H01B3/00; H01B3/02; H01B3/16; H01H1/00; H01H1/12; H01H1/36; H01H1/38; H01H1/385; H01H33/70; H01H33/7015; H01H33/7023; H01H33/02; H01H33/04; H01H33/14; H01H2033/146; H01H3/00; H01H3/32; H01H3/40; H01H33/88; H01H33/90; H01H33/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |