US2493352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cleaner
Assignee: Motors Liquidation Co
•
Filing: 1947-10-31
•
Granted: 1950-01-03
•
Expires: 1967-10-31
Abstract
No abstract record available.
Inventors
- 👤 Herbert G Kamrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:17
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1272434A
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US1349608A
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US1451329A
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US1960260A
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US2015174A
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US2108755A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |