US3309849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air treating device
Assignee: CRYSTAL RES LAB Inc
•
Filing: 1964-12-31
•
Granted: 1967-03-21
•
Expires: 1984-12-31
Abstract
No abstract record available.
Inventors
- 👤 Samuel I Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:36
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
AN AIR TREATING DEVICE COMPRISING A TUBULAR, OPEN MESH CONTAINER MADE OF A PLURALITY OF CRISS-CROSS FLEXIBLE PLASTIC STRANDS, AND AT LEAST ONE CARTRIDGE WITHIN SAID CONTAINER, SAID CARTRIDGE COMPRISING AIR PERMEABLE WALLS AND PARTICLES OF AIR-TREATING MATERIALS WITHIN SAID CARTRIDGE, THE ENDS OF SAID CONTAINER BEING SEALED PERMANENTLY TO ENCLOSE SAID CARTRIDGE THEREIN.
Claim 2
Dependent Claim
54 words
AN AIR TREATING DEVICE COMPRISING A TUBULAR, OPEN MESH CONTAINER MADE OF A PLURALITY OF CRISS-CROSS FLEXIBLE PLASTIC STRANDS, AND AT LEAST ONE CARTRIDGE WITHIN SAID CONTAINER, SAID CARTRIDGE COMPRISING AIR PERMEABLE WALLS AND PARTICLES OF AIR-TREATING MATERIALS WITHIN SAID CARTRIDGE, THE ENDS OF SAID CONTAINER BEING SEALED PERMANENTLY TO ENCLOSE SAID CARTRIDGE THEREIN.
References Cited (Backward Citations)
US1268053A
Cited
US1787231A
Cited
GB352960A
Cited
FR916729A
Cited
US2578324A
Cited
US2581684A
Cited
US3047370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |