US2520116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaper blade holder
Assignee: Individual
•
Filing: 1948-03-19
•
Granted: 1950-08-29
•
Expires: 1968-03-19
Abstract
No abstract record available.
Inventors
- 👤 Edward A Christenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:25
CPC Classifications
B; B23; B23B; B23B49/00; B23B49/003; B23B49/005; B27; B27G; B27G13/00; B27G13/12; B27G13/14; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17761; Y10T279/17821
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE130870C
Cited
US14263A
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US752863A
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US687401A
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US828706A
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US1047466A
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US2234477A
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DK45896A
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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) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |