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US2421657A
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Handsaw filing guide
Assignee: SPEED Corp
•
Filing: 1946-04-22
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Granted: 1947-06-03
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Expires: 1966-04-22
Abstract
No abstract record available.
Inventors
- 👤 James H Speed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:39
CPC Classifications
B; B23; B23D; B23D63/00; B23D63/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US23655A
Cited
US542282A
Cited
US1165248A
Cited
US1900084A
Cited
US2019330A
Cited
US2171169A
Cited
US2340096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-02 | 1950-12-02 | 1951-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-02 | 1954-12-02 | 1955-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-02 | 1958-12-02 | 1959-06-03 | $7700.00 | Window Closed / Lapsed |