US2686439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making cutting tools
Assignee: Individual
•
Filing: 1948-04-27
•
Granted: 1954-08-17
•
Expires: 1968-04-27
Abstract
No abstract record available.
Inventors
- 👤 Tobert Sven Eskil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:57
CPC Classifications
B; B22; B22F; B22F7/00; B22F7/06; B22F7/08; B23; B23D; B23D65/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/49792; Y10T29/49794; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12389; Y10T428/12403
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1803875A
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US1904049A
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US1860275A
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US1951856A
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US1948489A
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US1950355A
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US1951174A
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GB400565A
Cited
FR801856A
Cited
US2238351A
Cited
US2365965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-16 | 1958-02-15 | 1958-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-16 | 1962-02-15 | 1962-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-16 | 1966-02-15 | 1966-08-17 | $7700.00 | Window Closed / Lapsed |