Patent US1705487A successfully refreshed from Google Patents.
US1705487A
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Valve mechanism
Assignee: Borsig GmbH
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Filing: 1926-02-18
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Granted: 1929-03-19
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Expires: 1946-02-18
Abstract
No abstract record available.
Inventors
- 👤 Marscheider Karl
- 👤 Frisch Bruno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:35
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/20; F16K5/204; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/86936; Y10T137/86944; Y10T137/86984
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) | 1932-03-18 | 1932-09-17 | 1933-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-03-18 | 1936-09-17 | 1937-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-03-18 | 1940-09-17 | 1941-03-19 | $7700.00 | Window Closed / Lapsed |