US2916252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid valve
Assignee: Individual
•
Filing: 1957-01-09
•
Granted: 1959-12-08
•
Expires: 1977-01-09
Abstract
No abstract record available.
Inventors
- 👤 William M Hobbs
- 👤 Willard J Harper
- 👤 Jack D Meess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:46
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0603; F16K31/061; F16K31/0613; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US663346A
Cited
US1460517A
Cited
US2207082A
Cited
US2391277A
Cited
US2407963A
Cited
US2404514A
Cited
US2404349A
Cited
US2663319A
Cited
US2612907A
Cited
US2797061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |