Patent US2836691A successfully refreshed from Google Patents.
US2836691A
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US
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Combination variable resistor and switch
Assignee: CHICAGO TELEPHONE SUPPLY Corp
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Filing: 1956-06-18
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Granted: 1958-05-27
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Expires: 1976-06-18
Abstract
No abstract record available.
Inventors
- 👤 Girolamo Joseph Di
- 👤 Mervin B Arisman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:52
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/32; H01C10/36; H01C10/363
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) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |