Patent US2717013A successfully refreshed from Google Patents.
US2717013A
Expired / Lapsed
US
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Spiral guide for a machine tool
Assignee: Individual
•
Filing: 1951-11-28
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Granted: 1955-09-06
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Expires: 1971-11-28
Abstract
No abstract record available.
Inventors
- 👤 Benjamin R Van Zwalenburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:25
CPC Classifications
B; B27; B27C; B27C5/00; B27C5/10; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/306216; Y10T409/306384; Y10T409/306552; Y10T409/306608
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1745780A
Cited
US1899883A
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US2238304A
Cited
US2509164A
Cited
US2613704A
Cited
US2587994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |