Patent US1227612A successfully refreshed from Google Patents.
US1227612A
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Valve and valve-gear for elastic-fluid turbines.
Assignee: De Laval Steam Turbine Co
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Filing: 1914-11-18
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Granted: 1917-05-29
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Expires: 1934-11-18
Abstract
No abstract record available.
Inventors
- 👤 Henry J Hanzlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:25
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/46; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/18; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/87016
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) | 1920-05-28 | 1920-11-27 | 1921-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-05-28 | 1924-11-27 | 1925-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-05-28 | 1928-11-27 | 1929-05-29 | $7700.00 | Window Closed / Lapsed |