US3056504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering device
Assignee: Individual
•
Filing: 1959-09-03
•
Granted: 1962-10-02
•
Expires: 1979-09-03
Abstract
No abstract record available.
Inventors
- 👤 Lavallee Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:59
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/15; B01D33/25; B01D33/155; B01D33/70; B01D33/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1887129A
Cited
US1989306A
Cited
US2013776A
Cited
US2197971A
Cited
US2691445A
Cited
US2876905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |