Patent US2763267A successfully refreshed from Google Patents.
US2763267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smoke filter of fibrous material, especially for tobacco products
Assignee: Individual
•
Filing: 1952-11-18
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Granted: 1956-09-18
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Expires: 1972-11-18
Abstract
No abstract record available.
Inventors
- 👤 Muller Paul Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:50
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE166614C
Cited
US956832A
Cited
US1411975A
Cited
US1807521A
Cited
US1862659A
Cited
US2586935A
Cited
US2521985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |