US3440434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for programming cyclic actuation of valves
Assignee: Griswold Controls LLC
•
Filing: 1968-02-26
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Granted: 1969-04-22
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Expires: 1988-02-26
Abstract
No abstract record available.
Inventors
- 👤 Harry D Yates
- 👤 Calvin A Lieding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:43
CPC Classifications
G; G04; G04C; G04C23/00; G04C23/14; G04C23/34; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/10; G05B19/102; G05B19/104; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86445; Y10T137/86461
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) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |