US2921480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control line regulator
Assignee: Pacific Scientific Co
•
Filing: 1956-01-30
•
Granted: 1960-01-19
•
Expires: 1976-01-30
Abstract
No abstract record available.
Inventors
- 👤 Robert J Wrighton
- 👤 Clifford E Cushman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:33
CPC Classifications
F; F16; F16G; F16G11/00; F16G11/12; B; B64; B64C; B64C13/00; B64C13/24; B64C13/26; B64C13/28; B64C13/30; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20402; Y10T74/20408
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23933E
Cited
US2280106A
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US2327021A
Cited
US2375050A
Cited
US2424198A
Cited
US2399793A
Cited
US2787916A
Cited
US2810300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |