US3486313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condenser air lint filter
Assignee: T and P Mechanical Co Inc
•
Filing: 1967-12-20
•
Granted: 1969-12-30
•
Expires: 1987-12-20
Abstract
No abstract record available.
Inventors
- 👤 Ward Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:07
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2391863A
Cited
US1581363A
Cited
US1720702A
Cited
US1910829A
Cited
US2009140A
Cited
US2648396A
Cited
GB760046A
Cited
GB817030A
Cited
US3110182A
Cited
US3083515A
Cited
US3234715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |