US2704947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manual and automatic valve actuator with declutching unit
Assignee: MORGAN SMITH S CO
•
Filing: 1953-04-30
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Granted: 1955-03-29
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Expires: 1973-04-30
Abstract
No abstract record available.
Inventors
- 👤 Hopkins David Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:01
CPC Classifications
F; F16; F16H; F16H21/00; F16H21/06; F16K; F16K31/00; F16K31/12; F16K31/14; F16K31/143; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18696
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) | 1958-03-28 | 1958-09-27 | 1959-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-28 | 1962-09-27 | 1963-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-28 | 1966-09-27 | 1967-03-29 | $7700.00 | Window Closed / Lapsed |