US2717042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact operated valve
Assignee: Specialties Development Corp
•
Filing: 1950-03-31
•
Granted: 1955-09-06
•
Expires: 1970-03-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry C Grant
- 👤 Parsons Floyd Bancroft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:18
CPC Classifications
F; F16; F16K; F16K13/00; F16K13/04; F16K13/06; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1647
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR449925A
Cited
GB213325A
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CH122583A
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US1933694A
Cited
US2098399A
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US2183208A
Cited
US2284650A
Cited
US2478958A
Cited
GB608280A
Cited
US2588788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |