Patent US3371676A successfully refreshed from Google Patents.
US3371676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricated plug valve with adjustable uniform sealing pressure gland
Assignee: Grinnell Corp
•
Filing: 1965-06-18
•
Granted: 1968-03-05
•
Expires: 1985-06-18
Abstract
No abstract record available.
Inventors
- 👤 Iii John J Mullaney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:38
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/22; F16K5/222; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4393; Y10T137/4421
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2032316A
Cited
US2100470A
Cited
US2229120A
Cited
US2454389A
Cited
US2540668A
Cited
US2744651A
Cited
US2876987A
Cited
US3030067A
Cited
US3192942A
Cited
US3233921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |