Patent US3441028A successfully refreshed from Google Patents.
US3441028A
Expired / Lapsed
US
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Apparatus for and method of removing condensible compounds from tobacco smoke
Assignee: Individual
•
Filing: 1967-03-27
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Granted: 1969-04-29
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Expires: 1987-03-27
Abstract
No abstract record available.
Inventors
- 👤 Byron T Wall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:34
CPC Classifications
A; A24; A24F; A24F7/00; A24F7/04; A24D; A24D3/00; A24D3/04; A24D3/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |