Patent US2654530A successfully refreshed from Google Patents.
US2654530A
Expired / Lapsed
US
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Supercharger
Assignee: Eaton Corp
•
Filing: 1949-08-05
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Granted: 1953-10-06
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Expires: 1969-08-05
Abstract
No abstract record available.
Inventors
- 👤 Oldberg Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:44
CPC Classifications
F; F04; F04C; F04C18/00; F04C18/08; F04C18/12; F04C18/14; F04C18/16; F02; F02B; F02B33/00; F02M; F02M2700/00; F02M2700/33; F02M2700/331
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US612304A
Cited
US1542614A
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GB384355A
Cited
US2014932A
Cited
GB464493A
Cited
US2243874A
Cited
US2147405A
Cited
US2358815A
Cited
US2237716A
Cited
US2477002A
Cited
US2519913A
Cited
US2477004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |