US2680816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film badge radiation detector
Assignee: Individual
•
Filing: 1951-03-12
•
Granted: 1954-06-08
•
Expires: 1971-03-12
Abstract
No abstract record available.
Inventors
- 👤 Kurt G Stern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:16
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/02; G01T1/08; Y; Y10; Y10S; Y10S430/00; Y10S430/154
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1512827A
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US1556499A
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US1922823A
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US2258593A
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US2253231A
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US2322044A
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US2380244A
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US2483991A
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US2505346A
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US2496218A
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US2520077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |