US2868176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary plug valve
Assignee: Individual
•
Filing: 1954-07-14
•
Granted: 1959-01-13
•
Expires: 1974-07-14
Abstract
No abstract record available.
Inventors
- 👤 Robert H Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:24
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/083; F16K11/0833; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86638; Y10T137/86646; Y10T137/86839
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1525839A
Cited
US2252660A
Cited
US2229931A
Cited
US2331133A
Cited
US2388890A
Cited
FR985705A
Cited
US2737976A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |