Patent US2678224A successfully refreshed from Google Patents.
US1275697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Check-valve.
Assignee: Individual
•
Filing: 1917-09-29
•
Granted: 1918-08-13
•
Expires: 1937-09-29
Abstract
No abstract record available.
Inventors
- 👤 Patrick H Joyce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:23
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/02; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6161; Y10T137/6164; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1921-08-12 | 1922-02-11 | 1922-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-08-12 | 1926-02-11 | 1926-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-08-12 | 1930-02-11 | 1930-08-13 | $7700.00 | Window Closed / Lapsed |