US2936853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cleaner means
Assignee: Motors Liquidation Co
•
Filing: 1956-06-04
•
Granted: 1960-05-17
•
Expires: 1976-06-04
Abstract
No abstract record available.
Inventors
- 👤 Joseph N Heller
- 👤 Norman J Amlott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:28
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1556592A
Cited
US1873252A
Cited
US1926433A
Cited
US2069379A
Cited
US2198963A
Cited
DE719650C
Cited
US2689551A
Cited
DE838519C
Cited
US2788086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |