US2491315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means to hold an electric switch spindle in different axial positions
Assignee: Arrow Hart and Hegeman Electric Co
•
Filing: 1946-09-20
•
Granted: 1949-12-13
•
Expires: 1966-09-20
Abstract
No abstract record available.
Inventors
- 👤 David W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:14
CPC Classifications
H; H01; H01H; H01H15/00; H01H15/02; H01H15/06; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18856; Y10T74/18864; Y10T74/20; Y10T74/20576; Y10T74/20636
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1212346A
Cited
US813921A
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US1276926A
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US2085904A
Cited
US2115284A
Cited
US2107463A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |