Patent US2996183A successfully refreshed from Google Patents.
US2996183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor fiber cleaner
Assignee: Johns Manville Corp
•
Filing: 1958-04-23
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Granted: 1961-08-15
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Expires: 1978-04-23
Abstract
No abstract record available.
Inventors
- 👤 Gaillard R Russum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:40
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/02; C04B20/08; B; B03; B03B; B03B4/00; B03B4/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1026432A
Cited
US1510615A
Cited
US1932827A
Cited
US1943775A
Cited
US2129214A
Cited
US2257351A
Cited
US2813306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |