Patent US1435029A successfully refreshed from Google Patents.
US1435029A
Expired / Lapsed
US
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Valve and method of making same
Assignee: Individual
•
Filing: 1921-05-05
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Granted: 1922-11-07
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Expires: 1941-05-05
Abstract
No abstract record available.
Inventors
- 👤 Andrew M Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:58
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/04; Y; Y10; Y10S; Y10S29/00; Y10S29/035; Y10T; Y10T137/00; Y10T137/598; Y10T137/6161; Y10T137/6164; Y10T137/6167; Y10T137/6171; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791; Y10T137/7911; Y10T137/7913; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49409; Y10T29/49826; Y10T29/4984; Y10T29/49845; Y10T29/49853
Claims Analysis
Total Claims: 0
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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) | 1925-11-06 | 1926-05-08 | 1926-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-11-06 | 1930-05-08 | 1930-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-11-06 | 1934-05-08 | 1934-11-07 | $7700.00 | Window Closed / Lapsed |