US2954786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tobacco tar removal structure
Assignee: Macfarland Aveyard & Co
•
Filing: 1958-05-19
•
Granted: 1960-10-04
•
Expires: 1978-05-19
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Lebert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:51
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/04; A24D3/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1594606A
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US1983926A
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US2159121A
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US2476582A
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US2630878A
Cited
US2544206A
Cited
US2521985A
Cited
US2795227A
Cited
US2819720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |