Patent US2662149A successfully refreshed from Google Patents.
US2662149A
Expired / Lapsed
US
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Characteristic changer and linear potentiometer
Assignee: Individual
•
Filing: 1950-05-09
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Granted: 1953-12-08
•
Expires: 1970-05-09
Abstract
No abstract record available.
Inventors
- 👤 Jerzy J Wilentchik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:13
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1744592A
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US2122370A
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US2531200A
Cited
US2471393A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-07 | 1957-06-08 | 1957-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-07 | 1961-06-08 | 1961-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-07 | 1965-06-08 | 1965-12-08 | $7700.00 | Window Closed / Lapsed |