US2916039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter for tobacco smoke
Assignee: Individual
•
Filing: 1957-01-22
•
Granted: 1959-12-08
•
Expires: 1977-01-22
Abstract
No abstract record available.
Inventors
- 👤 Muller Paul Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:39
CPC Classifications
A; A24; A24D; A24D3/00; A24D3/02; A24D3/0204
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2164702A
Cited
US2202839A
Cited
US2698269A
Cited
US2666005A
Cited
GB741416A
Cited
US2743763A
Cited
US2718255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |