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Patent US2492935A successfully refreshed from Google Patents.
US2492935A
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Rotary blower with abrading rotor ends and abradable casing sealing ridges
Assignee: Borg Warner Corp
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Filing: 1943-11-22
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Granted: 1949-12-27
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Expires: 1963-11-22
Abstract
No abstract record available.
Inventors
- 👤 Robert P Mcculloch
- 👤 John L Ryde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:28
CPC Classifications
F; F04; F04C; F04C27/00; F01; F01C; F01C21/00; F01C21/10; F01C21/104; F01C21/108; Y; Y10; Y10T; Y10T29/00; Y10T29/46; Y10T29/49; Y10T29/49316; Y10T29/4932; Y10T29/49758
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US930907A
Cited
US1631359A
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US2028414A
Cited
GB464475A
Cited
US2259432A
Cited
US2322867A
Cited
US2373443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |