Patent US4923833A successfully refreshed from Google Patents.
Patent US2455874A successfully refreshed from Google Patents.
US2455874A
Expired / Lapsed
US
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Machine for testing and marking parts magnetically
Assignee: Curtiss Wright Corp
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Filing: 1944-04-07
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Granted: 1948-12-07
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Expires: 1964-04-07
Abstract
No abstract record available.
Inventors
- 👤 Albert J Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:25
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/83; G01N27/84
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1758268A
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US1897731A
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US1983388A
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US2234456A
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US2357512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |