US2684446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for X-ray photographing curved surfaces, especially for medical purposes
Assignee: Individual
•
Filing: 1950-11-04
•
Granted: 1954-07-20
•
Expires: 1970-11-04
Abstract
No abstract record available.
Inventors
- 👤 Paatero Yrjo Veli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:45
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/50; A61B6/51
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2492520A
Cited
US2511097A
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US1408559A
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DE670322C
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DE700466C
Cited
US2396069A
Cited
FR944914A
Cited
US2437688A
Cited
US2584962A
Cited
US2476776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |