Patent US2580959A successfully refreshed from Google Patents.
US2580959A
Expired / Lapsed
US
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Flying saw
Assignee: Individual
•
Filing: 1947-07-19
•
Granted: 1952-01-01
•
Expires: 1967-07-19
Abstract
No abstract record available.
Inventors
- 👤 Ropp Irwin
- 👤 Wilbert S Blackstone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:40
CPC Classifications
B; B23; B23D; B23D25/00; B23D25/02; B23D25/04; B23D45/00; B23D45/18; Y; Y10; Y10T; Y10T83/00; Y10T83/141; Y10T83/159; Y10T83/444; Y10T83/4529; Y10T83/465; Y10T83/4734; Y10T83/4766; Y10T83/4775; Y10T83/478; Y10T83/4795; Y10T83/4818
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1580809A
Cited
US2157067A
Cited
US2120853A
Cited
US2341870A
Cited
US2332013A
Cited
US2512204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |