US2487490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Float valve
Assignee: Individual
•
Filing: 1946-04-19
•
Granted: 1949-11-08
•
Expires: 1966-04-19
Abstract
No abstract record available.
Inventors
- 👤 Vance C Sterrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:03
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/20; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7413; Y10T137/7439; Y10T137/7465; Y10T137/7468; Y10T137/7472; Y10T137/7488; Y10T24/00; Y10T24/39; Y10T24/3984; Y10T24/44; Y10T24/44641
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1123770A
Cited
US1178396A
Cited
US1226139A
Cited
US1576600A
Cited
US1690057A
Cited
US1832243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-07 | 1953-05-09 | 1953-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-07 | 1957-05-09 | 1957-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-07 | 1961-05-09 | 1961-11-08 | $7700.00 | Window Closed / Lapsed |