US2818688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for inside machining as grinding, milling, etc., of tubes and method for performance of this operation
Assignee: Sandvik AB
•
Filing: 1954-09-14
•
Granted: 1958-01-07
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Expires: 1974-09-14
Abstract
No abstract record available.
Inventors
- 👤 Swedmark Lennart Gregor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:22
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/36; B24B5/40
Claims Analysis
Total Claims: 0
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US2056182A
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US2196058A
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US2645063A
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US2680939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |