Patent FR878999A successfully refreshed from Google Patents.
US2620825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic cycling valve
Assignee: Individual
•
Filing: 1943-09-25
•
Granted: 1952-12-09
•
Expires: 1963-09-25
Abstract
No abstract record available.
Inventors
- 👤 Joseph G Cannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:50
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/16; F16K31/165; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7934; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86413
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US849105A
Cited
US873766A
Cited
US928459A
Cited
US1218567A
Cited
US1556332A
Cited
US1651778A
Cited
US1796941A
Cited
US2361773A
Cited
US2366144A
Cited
US2271497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |