US2873028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filters
Assignee: Individual
•
Filing: 1955-09-06
•
Granted: 1959-02-10
•
Expires: 1975-09-06
Abstract
No abstract record available.
Inventors
- 👤 Bried Henry Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:55
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/04; B01D33/056; B01D33/06; B01D33/70; B01D33/74; B01D33/745
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |