US3483985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flip-top aquarium filter
Assignee: TFH Publications Inc
•
Filing: 1967-10-13
•
Granted: 1969-12-16
•
Expires: 1987-10-13
Abstract
No abstract record available.
Inventors
- 👤 Herbert R Axelrod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:06
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02; B01D35/027; A; A01; A01K; A01K63/00; A01K63/04; A01K63/045; B01D29/00; B01D29/01; B01D2201/00; B01D2201/08; B01D2201/087; B01D2201/18; B01D2201/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2782161A
Cited
US3145168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |