US3429331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Needle valves,notably for direct-flow lock-chambers
Assignee: Heurtey SA
•
Filing: 1966-03-18
•
Granted: 1969-02-25
•
Expires: 1986-03-18
Abstract
No abstract record available.
Inventors
- 👤 Robert Prevost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:44
CPC Classifications
B; B65; B65G; B65G53/00; B65G53/34; B65G53/40; B65G53/46; B65D; B65D90/00; B65D90/54; B65D90/62; B65D90/626; B65G53/4691; F; F16; F16K; F16K1/00; F16K1/12; F16K1/126; F16K31/00; F16K31/12; F16K31/122; Y; Y10; Y10T; Y10T137/00; Y10T137/3367; Y10T137/4238; Y10T137/4245; Y10T137/4273; Y10T137/4336; Y10T137/8593; Y10T137/87917; Y10T137/88038
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US208986A
Cited
US1395018A
Cited
US1836374A
Cited
US2341018A
Cited
US2608204A
Cited
US2470744A
Cited
US2598122A
Cited
US2687868A
Cited
US2852035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |