US2961548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system
Assignee: GPE Controls Inc
•
Filing: 1959-08-17
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Granted: 1960-11-22
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Expires: 1979-08-17
Abstract
No abstract record available.
Inventors
- 👤 George A Prell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:06
CPC Classifications
D; D06; D06H; D06H7/00; D06H7/04; D06H7/06; B; B65; B65H; B65H23/00; B65H23/02; B65H23/032; B65H23/0326
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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |