Patent US2799397A successfully refreshed from Google Patents.
US2799397A
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Assignee: Individual
•
Filing: 1953-12-23
•
Granted: 1957-07-16
•
Expires: 1973-12-23
Abstract
No abstract record available.
Inventors
- 👤 Berline Raoul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:41
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D33/00; B01D33/15; B01D33/21; B01D33/23; B01D33/44; B01D33/46; B01D33/461; B01D33/466; B01D33/80; B01D33/804; B01D33/807
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |