US2680166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple circuit control switch
Assignee: Arrow Hart and Hegeman Electric Co
•
Filing: 1952-02-28
•
Granted: 1954-06-01
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Expires: 1972-02-28
Abstract
No abstract record available.
Inventors
- 👤 Walter L Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:54
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/26; H01H13/36; H01H13/365; H01H19/00; H01H19/54; H01H19/60; H01H19/62; H01H19/626; H01H43/00; H01H43/10; H01H43/101
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) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |