US3520307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke purifier for cigarette holders,pipes and other smoking apparatus
Assignee: Defim SA Rue Frederick Lemaitr
•
Filing: 1967-06-26
•
Granted: 1970-07-14
•
Expires: 1987-06-26
Abstract
No abstract record available.
Inventors
- 👤 Jacques Fizet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:34
CPC Classifications
A; A24; A24F; A24F1/00; A24F1/02; A24F1/16; A24F13/00; A24F13/02; A24F13/04; A24F13/06; A24F2700/00; A24F2700/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB190219670A
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US1189690A
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US1477029A
Cited
US1556236A
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FR681954A
Cited
US2245019A
Cited
US2580974A
Cited
US2869558A
Cited
US3303850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |