Patent US2474422A successfully refreshed from Google Patents.
US2474422A
Expired / Lapsed
US
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X-ray equipment
Assignee: F R MACHINE WORKS
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Filing: 1947-11-20
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Granted: 1949-06-28
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Expires: 1967-11-20
Abstract
No abstract record available.
Inventors
- 👤 Oswald C Hollstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:21
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/08; A61N; A61N5/00; A61N5/10; A61N5/1048; A61N5/1049; G; G21; G21K; G21K5/00; G21K5/04; A61N2005/1056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1164987A
Cited
US2204465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-27 | 1952-12-27 | 1953-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-27 | 1956-12-27 | 1957-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-27 | 1960-12-27 | 1961-06-28 | $7700.00 | Window Closed / Lapsed |