US1286672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Union check-valve.
Assignee: Individual
•
Filing: 1916-12-16
•
Granted: 1918-12-03
•
Expires: 1936-12-16
Abstract
No abstract record available.
Inventors
- 👤 Fred O Lindgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:54
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7854; Y10T137/7855; Y10T137/7898; Y10T137/7901
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) | 1921-12-02 | 1922-06-03 | 1922-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-12-02 | 1926-06-03 | 1926-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-12-02 | 1930-06-03 | 1930-12-03 | $7700.00 | Window Closed / Lapsed |