US2979597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable control switch
Assignee: Cory Corp
•
Filing: 1957-06-26
•
Granted: 1961-04-11
•
Expires: 1977-06-26
Abstract
No abstract record available.
Inventors
- 👤 Harvey R Karlen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:12
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0213; H01; H01H; H01H37/00; H01H37/02; H01H37/12; H01H37/28; H01H43/00; H01H43/30; H01H43/301; H01H43/302; H01H43/304
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2199638A
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US2350148A
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US2753437A
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US2798929A
Cited
US2741682A
Cited
US2790056A
Cited
US2804524A
Cited
US2788415A
Cited
US2805302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |