Patent US2821253A successfully refreshed from Google Patents.
US2821253A
Expired / Lapsed
US
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Fiber cutter
Assignee: Akzo Nobel UK PLC
•
Filing: 1955-04-14
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Granted: 1958-01-28
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Expires: 1975-04-14
Abstract
No abstract record available.
Inventors
- 👤 Robert D Heffelfinger
- 👤 Machenry Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:08
CPC Classifications
D; D01; D01G; D01G1/00; D01G1/02; D01G1/04; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4594; Y10T83/4645; Y10T83/485; Y10T83/494
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US195824A
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US380288A
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FR420447A
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US1118843A
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US1515377A
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US1745442A
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US1745444A
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US1940484A
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US2221065A
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US2338755A
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US2582522A
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US2768689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |