Patent US2632072A successfully refreshed from Google Patents.
US2632072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low voltage switch
Assignee: Individual
•
Filing: 1950-03-20
•
Granted: 1953-03-17
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Expires: 1970-03-20
Abstract
No abstract record available.
Inventors
- 👤 Floyd L Zellner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:30
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB444045A
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US2287164A
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US2190685A
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US2245391A
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US2384948A
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US2324844A
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US2444198A
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US2454060A
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US2415452A
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US2534873A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |