Patent US1463103A successfully refreshed from Google Patents.
US1463103A
Expired / Lapsed
US
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Clapper valve
Assignee: Individual
•
Filing: 1922-04-18
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Granted: 1923-07-24
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Expires: 1942-04-18
Abstract
No abstract record available.
Inventors
- 👤 Alfred F Thorsten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:16
CPC Classifications
B; B63; B63B; B63B29/00; B63B29/16; B63J; B63J4/00; B63J4/006; F; F16; F16K; F16K1/00; F16K15/00; F16K15/18; F16K15/182; F16K15/1821; F16K31/00; F16K31/44; F16K31/53; F16K31/535; B63B13/00; B63B2013/005; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898; Y10T137/7903
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) | 1926-07-23 | 1927-01-22 | 1927-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-07-23 | 1931-01-22 | 1931-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-07-23 | 1935-01-22 | 1935-07-24 | $7700.00 | Window Closed / Lapsed |