US2905184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter for tobacco smoke
Assignee: Olin Corp
•
Filing: 1955-08-19
•
Granted: 1959-09-22
•
Expires: 1975-08-19
Abstract
No abstract record available.
Inventors
- 👤 Milton O Schur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:01
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/06; A24D3/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1451235A
Cited
US2064239A
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GB433331A
Cited
US2164702A
Cited
US2202839A
Cited
US2476582A
Cited
US2668544A
Cited
GB623964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |