US2850227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor air bleed-off valve
Assignee: Motors Liquidation Co
•
Filing: 1954-12-03
•
Granted: 1958-09-02
•
Expires: 1974-12-03
Abstract
No abstract record available.
Inventors
- 👤 John B Wheatley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:30
CPC Classifications
F; F04; F04D; F04D27/00; F04D27/02; F04D27/0207; F04D27/0215; F04D27/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE237490C
Cited
US2300766A
Cited
US2424839A
Cited
FR1012339A
Cited
GB672193A
Cited
US2698711A
Cited
US2702665A
Cited
FR1058900A
Cited
US2741423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |