Patent US1663998A successfully refreshed from Google Patents.
US1663998A
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Means for minimizing fluid pulsations
Assignee: Westinghouse Electric Corp
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Filing: 1925-05-28
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Granted: 1928-03-27
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Expires: 1945-05-28
Abstract
No abstract record available.
Inventors
- 👤 Henry F Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:56
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/66; F04D29/669; F04D29/40; F04D29/42; F04D29/426; F04D29/428; F16; F16L; F16L55/00; F16L55/04
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) | 1931-03-27 | 1931-09-26 | 1932-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-03-27 | 1935-09-26 | 1936-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-03-27 | 1939-09-26 | 1940-03-27 | $7700.00 | Window Closed / Lapsed |