Patent US2642503A successfully refreshed from Google Patents.
US2642503A
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Adjustable multiple circuit control switch
Assignee: Arrow Hart and Hegeman Electric Co
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Filing: 1951-01-22
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Granted: 1953-06-16
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Expires: 1971-01-22
Abstract
No abstract record available.
Inventors
- 👤 Walter L Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:53
CPC Classifications
H; H01; H01H; H01H43/00; H01H43/10; H01H43/12; H01H43/125; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7098; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/2066; Y10T74/21; Y10T74/2101; Y10T74/2102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |