US2500806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: American Brake Shoe Co
•
Filing: 1946-07-19
•
Granted: 1950-03-14
•
Expires: 1966-07-19
Abstract
No abstract record available.
Inventors
- 👤 William P Dalrymple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:52
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/02; F04B49/03; F16; F16K; F16K15/00; F16K15/02; F16K15/025; F16K2200/00; F16K2200/30; F16K2200/303; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2557; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7796; Y10T137/7837; Y10T137/7838; Y10T137/7846; Y10T137/7904; Y10T137/7922; Y10T137/7923; Y10T137/8593; Y10T137/87917; Y10T137/88054
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR460088A
Cited
US1215071A
Cited
US1421309A
Cited
US1428981A
Cited
US1850117A
Cited
US2015801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |