US2871324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple variable resistance control with common snap-in mounting
Assignee: CHICAGO TELEPHONE SUPPLY Corp
•
Filing: 1956-03-26
•
Granted: 1959-01-27
•
Expires: 1976-03-26
Abstract
No abstract record available.
Inventors
- 👤 Wilbert H Budd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:00
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1225525A
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US2520725A
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US2703662A
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US2536181A
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US2493184A
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US2680225A
Cited
US2740027A
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US2740026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |