US2608807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precision hole grinder
Assignee: ONSRUD MACHINE WORKS Inc
•
Filing: 1949-11-17
•
Granted: 1952-09-02
•
Expires: 1969-11-17
Abstract
No abstract record available.
Inventors
- 👤 Nilsen Arne
- 👤 Rohrer Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:40
CPC Classifications
B; B24; B24B; B24B41/00; B24B41/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1304278A
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US1219827A
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US1441242A
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US1839253A
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US1981269A
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FR857704A
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US2388955A
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US2458765A
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GB604919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |