US2492339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photofluoroscopic apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1947-05-10
•
Granted: 1949-12-27
•
Expires: 1967-05-10
Abstract
No abstract record available.
Inventors
- 👤 Robert J Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:08
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/44; A61B6/4476
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2060981A
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US847728A
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US1117266A
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US1610789A
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US1682083A
Cited
US1926902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |