US2603725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple circuit control switch
Assignee: Arrow Hart and Hegeman Electric Co
•
Filing: 1949-08-02
•
Granted: 1952-07-15
•
Expires: 1969-08-02
Abstract
No abstract record available.
Inventors
- 👤 Walter L Dietrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:08
CPC Classifications
H; H01; H01H; H01H43/00; H01H43/10; H01H43/101; H01H13/00; H01H13/02; H01H13/26; H01H13/36; H01H13/365; H01H19/00; H01H19/54; H01H19/60; H01H19/62; H01H19/626
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1475619A
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US1582268A
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US1673607A
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US2239999A
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US2273751A
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US2332911A
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US2465086A
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US2476056A
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US2487286A
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US2488110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-15 | 1956-01-14 | 1956-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-15 | 1960-01-14 | 1960-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-15 | 1964-01-14 | 1964-07-15 | $7700.00 | Window Closed / Lapsed |