US2427136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supercharger
Assignee: Westinghouse Electric Corp
•
Filing: 1944-04-08
•
Granted: 1947-09-09
•
Expires: 1964-04-08
Abstract
No abstract record available.
Inventors
- 👤 Harold F Hagen
- 👤 Jr James L Bartlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:01
CPC Classifications
F; F02; F02B; F02B33/00; F02M; F02M2700/00; F02M2700/33; F02M2700/331; F02M2700/333
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1629141A
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US786384A
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FR398640A
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US1418704A
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US1798787A
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US1989966A
Cited
US1928332A
Cited
DE703364C
Cited
GB544440A
Cited
US2300766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-08 | 1951-03-10 | 1951-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-08 | 1955-03-10 | 1955-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-08 | 1959-03-10 | 1959-09-09 | $7700.00 | Window Closed / Lapsed |