Patent US2473948A successfully refreshed from Google Patents.
US2473948A
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Speed controlled centrifugal valve
Assignee: International Motors LLC
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Filing: 1946-06-24
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Granted: 1949-06-21
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Expires: 1966-06-24
Abstract
No abstract record available.
Inventors
- 👤 William H Harstick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:11
CPC Classifications
B; B04; B04B; B04B1/00; B04B1/10; B04B1/14; B04B1/16; Y; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/108; Y10T137/1135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US788116A
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US802781A
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US1228429A
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US1610770A
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US1751982A
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DE576524C
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US2091329A
Cited
US2173580A
Cited
US2427779A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |