US2800273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor inlet de-icing
Assignee: Motors Liquidation Co
•
Filing: 1952-04-30
•
Granted: 1957-07-23
•
Expires: 1972-04-30
Abstract
No abstract record available.
Inventors
- 👤 John B Wheatley
- 👤 Arthur W Gaubatz
- 👤 Fred R Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:37
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/04; F02C7/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR878999A
Cited
US2514105A
Cited
US2474258A
Cited
GB629044A
Cited
GB619390A
Cited
US2474068A
Cited
GB637598A
Cited
US2634049A
Cited
US2647368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |