US2628540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulp molding machine and process
Assignee: Keyes Fibre Corp
•
Filing: 1946-02-26
•
Granted: 1953-02-17
•
Expires: 1966-02-26
Abstract
No abstract record available.
Inventors
- 👤 Walter H Randall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:50
CPC Classifications
D; D21; D21J; D21J3/00; F; F42; F42B; F42B7/00; F42B7/02; F42B7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US364096A
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US488517A
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US591329A
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USRE19856E
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US2026765A
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DE601771C
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FR833441A
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GB515678A
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US2296744A
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US2298391A
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US2356271A
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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) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |