US3421546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure release valve
Assignee: JACK W JENNINGS
•
Filing: 1965-07-16
•
Granted: 1969-01-14
•
Expires: 1985-07-16
Abstract
No abstract record available.
Inventors
- 👤 Jack W Jennings
- 👤 George A Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:37
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; F16K31/0658; F16K31/0662; F16K15/00; F16K15/02; F16K15/04; F16K15/044; F16K15/06; F16K15/063; F16K15/18; F16K15/182; F16K2200/00; F16K2200/30; F16K2200/302; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7876; Y10T137/7877; Y10T137/7904; Y10T137/7905; Y10T137/7922; Y10T137/7927; Y10T137/7928; Y10T137/7929
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |