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Patent US2225940A successfully refreshed from Google Patents.
US2225940A
Expired / Lapsed
US
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Method of and apparatus for protecting patients from injury by x-rays
Assignee: Individual
•
Filing: 1936-12-28
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Granted: 1940-12-24
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Expires: 1956-12-28
Abstract
No abstract record available.
Inventors
- 👤 Grossmann Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:19
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/10; A; A61; A61B; A61B6/00; A61B6/06; A61B6/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-12-24 | 1944-06-24 | 1944-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-24 | 1948-06-24 | 1948-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-24 | 1952-06-24 | 1952-12-24 | $7700.00 | Window Closed / Lapsed |