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Patent US2621567A successfully refreshed from Google Patents.
US2621567A
Expired / Lapsed
US
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Paper shredding machine
Assignee: Individual
•
Filing: 1949-05-23
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Granted: 1952-12-16
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Expires: 1969-05-23
Abstract
No abstract record available.
Inventors
- 👤 Filemon T Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:14
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/0007; B02C2018/0069; Y; Y10; Y10S; Y10S493/00; Y10S493/967; Y10T; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/483; Y10T83/4836
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US609896A
Cited
US1027363A
Cited
US1601299A
Cited
US1966109A
Cited
US1866690A
Cited
US2040745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |