US3570239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wristwatch with means for checking radioactivity of the environment
Assignee: GEORGES RUEDIN
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Filing: 1969-05-13
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Granted: 1971-03-16
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Expires: 1989-05-13
Abstract
Abstract A WRISTWATCH PROVIDED WITH MEANS FOR CHECKING THE RADIOACTIVITY OF THE ENVIRONMENT IN WHICH THE WATCH IS OF THERMO-LUMINESCENT MATERIAL, THE THERMO-LUMINESCENCE LOCATED, THE CHECKING MEANS COMPRISING AN ELEMENT MADE OF WHICH VARIES WITH THE RADIATIONS TO WHICH THE ELEMENT HAS BEEN SUBMITTED.
Inventors
- 👤 Francois Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:40
CPC Classifications
G; G04; G04B; G04B47/00; G04B47/06
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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |