US2602548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unit type filter
Assignee: Individual
•
Filing: 1945-09-13
•
Granted: 1952-07-08
•
Expires: 1965-09-13
Abstract
No abstract record available.
Inventors
- 👤 Edgar J Griffiths
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:10
CPC Classifications
B; B01; B01D; B01D25/00; B01D25/22; B01D25/26; B01D35/00; B01D35/02; B01D35/027; B01D2201/00; B01D2201/02; B01D2201/04; B01D2201/0415
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) | 1955-07-08 | 1956-01-07 | 1956-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-08 | 1960-01-07 | 1960-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-08 | 1964-01-07 | 1964-07-08 | $7700.00 | Window Closed / Lapsed |