US2925575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable resistor
Assignee: CHICAGO TELEPHONE SUPPLY Corp
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Filing: 1957-10-21
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Granted: 1960-02-16
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Expires: 1977-10-21
Abstract
No abstract record available.
Inventors
- 👤 Wayne A Barden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:25
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/16; H01C10/30; H01C10/32; H01C10/34
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) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |