US2540273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: International Motors LLC
•
Filing: 1945-12-06
•
Granted: 1951-02-06
•
Expires: 1965-12-06
Abstract
No abstract record available.
Inventors
- 👤 Howard S Manwaring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:22
CPC Classifications
B; B01; B01D; B01D25/00; B01D25/001; B01D25/22; B01D25/24; B01D25/26
Claims Analysis
Total Claims: 0
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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) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |