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US3039712A
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Rapid roll changer
Assignee: Celanese Corp
•
Filing: 1959-01-23
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Granted: 1962-06-19
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Expires: 1979-01-23
Abstract
No abstract record available.
Inventors
- 👤 Weber Harold
- 👤 Harold J Brown
- 👤 Arthur T Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:13
CPC Classifications
B; B65; B65H; B65H19/00; B65H19/22; B65H19/2207; B65H67/00; B65H67/04; B65H67/0405; B65H2301/00; B65H2301/40; B65H2301/41; B65H2301/414; B65H2301/4146; B65H2301/41466; B65H2301/41468; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1655299A
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US2060359A
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US2176198A
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US2416540A
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US2617605A
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US2498224A
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US2635823A
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US2915255A
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US2914267A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |