US1602920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric switch
Assignee: Westinghouse Electric Corp
•
Filing: 1921-02-19
•
Granted: 1926-10-12
•
Expires: 1941-02-19
Abstract
No abstract record available.
Inventors
- 👤 William E Menzies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:51
CPC Classifications
H; H01; H01H; H01H21/00; H01H21/02; H01H21/18; H01H21/36; H01H21/40; H01H21/42
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) | 1929-10-11 | 1930-04-12 | 1930-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-10-11 | 1934-04-12 | 1934-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-10-11 | 1938-04-12 | 1938-10-12 | $7700.00 | Window Closed / Lapsed |