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US3739558A
Expired / Lapsed
US
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Odor adsorber
Assignee: Canadian Char-Co Ltd
•
Filing: 1971-12-06
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Granted: 1973-06-19
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Expires: 1991-12-06
Abstract
Abstract An odor adsorbing device in the form of a perforated elongated container filled with activated carbon particles. A cap is removably mounted on the container, allowing the device to be refilled.
Inventors
- 👤 F Hurson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:41
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2303332A
Cited
US3376695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |