US3406712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure operated snap acting valve
Assignee: Anderson Greenwood and Co
•
Filing: 1965-05-24
•
Granted: 1968-10-22
•
Expires: 1985-05-24
Abstract
No abstract record available.
Inventors
- 👤 Irvin B Weise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:41
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/10; F16K17/105; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7738; Y10T137/7739; Y10T137/7744; Y10T137/7745; Y10T137/7746; Y10T137/7758; Y10T137/7762; Y10T137/7764
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) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |