Patent US2580239A successfully refreshed from Google Patents.
US2580239A
Expired / Lapsed
US
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Comparator for tracing contours of solid objects
Assignee: Jones and Lamson Machine Co
•
Filing: 1947-07-11
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Granted: 1951-12-25
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Expires: 1967-07-11
Abstract
No abstract record available.
Inventors
- 👤 Harold L Murch
- 👤 Leon B Fuller
- 👤 Robert O Beardsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:36
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/24; G01B11/2425
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1157796A
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US1255127A
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US1589349A
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US1665721A
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US2035780A
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US2192529A
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US2214376A
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US2400942A
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US2386806A
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US2451155A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |