Patent JPS59186972A successfully refreshed from Google Patents.
US2909285A
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Assignee: Individual
•
Filing: 1956-03-29
•
Granted: 1959-10-20
•
Expires: 1976-03-29
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Besler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:20
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/39; B01D29/88; B01D29/94; B01D29/96; B01D2201/00; B01D2201/26; B01D2201/265
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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |