Patent US2427136A successfully refreshed from Google Patents.
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 20:44
CPC Classifications
F; F02; F02B; F02B33/00; F02M; F02M2700/00; F02M2700/33; F02M2700/331; F02M2700/333
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1629141A
Cited
US786384A
Cited
FR398640A
Cited
US1418704A
Cited
US1798787A
Cited
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 |