US2807280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Program control valve
Assignee: Individual
•
Filing: 1953-07-20
•
Granted: 1957-09-24
•
Expires: 1973-07-20
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Kittredge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:34
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/04; F16K27/048; F16K11/00; F16K11/02; F16K11/06; F16K11/072; F16K11/074; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86839; Y10T137/87265; Y10T137/87322; Y10T137/87338; Y10T137/87499
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US679767A
Cited
US1652710A
Cited
US2054259A
Cited
US2157240A
Cited
US2076321A
Cited
US2243815A
Cited
US2354694A
Cited
US2614503A
Cited
US2747611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |