US2984127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission for a valve operator
Assignee: Henry Pratt Co LLC
•
Filing: 1957-03-14
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Granted: 1961-05-16
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Expires: 1977-03-14
Abstract
No abstract record available.
Inventors
- 👤 Henry C Schwenk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:55
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/53; F16K31/535; F16H; F16H1/00; F16H1/28; F16H1/46; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225
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) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |