US2966979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor control systems
Assignee: Clark Controller Co
•
Filing: 1955-05-11
•
Granted: 1961-01-03
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Expires: 1975-05-11
Abstract
No abstract record available.
Inventors
- 👤 Steve A Zarling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:44
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/14; B30B15/148; F; F16; F16P; F16P3/00; F16P3/18; F16P3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2301491A
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US2655609A
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US2663830A
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FR1080849A
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US2762873A
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US2788449A
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US2831126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |