US2393116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary blower
Assignee: B W SUPERCHARGERS Inc
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Filing: 1942-03-20
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Granted: 1946-01-15
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Expires: 1962-03-20
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 11:09
CPC Classifications
F; F04; F04C; F04C27/00; F04C27/005; F02; F02B; F02B33/00; F04C18/00; F04C18/08; F04C18/082; F04C18/084; F04C18/086; F04C18/12; F04C18/123; F02M; F02M2700/00; F02M2700/33; F02M2700/331
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) | 1949-01-14 | 1949-07-16 | 1950-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-01-14 | 1953-07-16 | 1954-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-01-14 | 1957-07-16 | 1958-01-15 | $7700.00 | Window Closed / Lapsed |