US3518921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing a tobacco filter rod or cord from a web of fibrous material
Assignee: Celfil Co
•
Filing: 1967-02-08
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Granted: 1970-07-07
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Expires: 1987-02-08
Abstract
No abstract record available.
Inventors
- 👤 Paul A Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:08
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/14; A; A24; A24D; A24D3/00; A24D3/02; A24D3/0204; B01D39/16; B01D39/18; B01D46/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24281; Y10T428/24289; Y10T428/24322; Y10T83/00; Y10T83/02; Y10T83/0237; Y10T83/0244; Y10T83/929; Y10T83/9314
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) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |