US2766624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test chamber
Assignee: Motors Liquidation Co
•
Filing: 1954-01-04
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Granted: 1956-10-16
•
Expires: 1974-01-04
Abstract
No abstract record available.
Inventors
- 👤 Francis E Heffner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:25
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; B; B01; B01L; B01L1/00; B01L1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1858409A
Cited
US1751806A
Cited
US1960696A
Cited
US2062747A
Cited
GB571294A
Cited
US2575169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |