US2494427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deaerator
Assignee: Motors Liquidation Co
•
Filing: 1945-02-07
•
Granted: 1950-01-10
•
Expires: 1965-02-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Bidwell
- 👤 Arthur F Underwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:16
CPC Classifications
F; F02; F02M; F02M37/00; F02M37/20; Y; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR541252A
Cited
DE308288C
Cited
US1387748A
Cited
GB209439A
Cited
GB308010A
Cited
US2187646A
Cited
US2147993A
Cited
DE687966C
Cited
US2228401A
Cited
US2323525A
Cited
US2223112A
Cited
US2277651A
Cited
US2316729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |