Patent US2853766A successfully refreshed from Google Patents.
US2853766A
Expired / Lapsed
US
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Method of making rotary blower
Assignee: Motors Liquidation Co
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Filing: 1955-11-21
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Granted: 1958-09-30
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Expires: 1975-11-21
Abstract
No abstract record available.
Inventors
- 👤 Roger D Wellington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:38
CPC Classifications
F; F01; F01C; F01C19/00; F01C1/00; F01C1/08; F01C1/082; F01C1/084; F01C21/00; F01C21/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49236; Y10T29/49245; Y10T29/49801
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1053677A
Cited
GB535554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |