US3527235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tobacco smoke filter device
Assignee: Matra Corp
•
Filing: 1968-05-24
•
Granted: 1970-09-08
•
Expires: 1988-05-24
Abstract
No abstract record available.
Inventors
- 👤 Paul H Fidelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:35
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/04; A24D3/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA677137A
Cited
US2386684A
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GB739002A
Cited
US2954786A
Cited
US3079926A
Cited
US3006346A
Cited
US3251365A
Cited
US3318312A
Cited
US3335733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |