Patent US2950873A successfully refreshed from Google Patents.
US2950873A
Expired / Lapsed
US
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Mechanical roll changer
Assignee: Akzo Nobel UK PLC
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Filing: 1957-02-26
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Granted: 1960-08-30
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Expires: 1977-02-26
Abstract
No abstract record available.
Inventors
- 👤 Seddon C Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:06
CPC Classifications
B; B65; B65H; B65H19/00; B65H19/22; B65H19/28; B65H19/2207; B65H19/2223; B65H2408/00; B65H2408/20; B65H2408/23; B65H2408/231; B65H2408/2315; B65H2408/23155
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) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |