US2653207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable potentiometer termination
Assignee: AT&T Inc
•
Filing: 1950-12-15
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Granted: 1953-09-22
•
Expires: 1970-12-15
Abstract
No abstract record available.
Inventors
- 👤 Howard L Coyne
- 👤 Orwar S A Mesch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:15
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1522634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |