Patent US3057402A successfully refreshed from Google Patents.
US3057402A
Expired / Lapsed
US
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Silent suction roll assembly
Assignee: Individual
•
Filing: 1959-12-31
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Granted: 1962-10-09
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Expires: 1979-12-31
Abstract
No abstract record available.
Inventors
- 👤 David R Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:04
CPC Classifications
D; D21; D21F; D21F3/00; D21F3/02; D21F3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1817594A
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US1995011A
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US2162097A
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US2942662A
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US2911039A
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US2991218A
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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) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |