US2463954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1945-09-04
•
Granted: 1949-03-08
•
Expires: 1965-09-04
Abstract
No abstract record available.
Inventors
- 👤 Earl J Decker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:39
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/02; B01D27/08
Claims Analysis
Total Claims: 0
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US2277737A
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US2337470A
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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) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |