Patent US2738807A successfully refreshed from Google Patents.
US2738807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid control valve
Assignee: Individual
•
Filing: 1949-07-20
•
Granted: 1956-03-20
•
Expires: 1969-07-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Addison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:41
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/072; Y; Y10; Y10S; Y10S239/00; Y10S239/15; Y10T; Y10T137/00; Y10T137/8376; Y10T137/8593; Y10T137/86389; Y10T137/86445; Y10T137/86911
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US620829A
Cited
US1387101A
Cited
US998543A
Cited
US1272384A
Cited
US1842382A
Cited
DE660750C
Cited
US2235287A
Cited
US2315223A
Cited
US2371498A
Cited
US2368832A
Cited
US2428410A
Cited
US2582333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |