Patent US1933468A successfully refreshed from Google Patents.
Patent US3177364A successfully refreshed from Google Patents.
US3177364A
Expired / Lapsed
US
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Shutter controlled radiographic exposure unit
Assignee: Motors Liquidation Co
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Filing: 1962-08-22
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Granted: 1965-04-06
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Expires: 1982-08-22
Abstract
No abstract record available.
Inventors
- 👤 Farno L Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:49
CPC Classifications
G; G21; G21K; G21K5/00; G21K5/02; G03; G03B; G03B9/00; G03B9/08; G21F; G21F5/00; G21F5/02; G21F5/04; G21K1/00; G21K1/02; G21K1/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
A STORAGE AND EXPOSURE DEVICE FOR A RADIOISOTOPE SOURCE COMPRISING AT LEAST THREE BODIES OF SHIELDING MATERIAL, MOUNTING MEANS FOR PERMITTING ROTATION OF EACH OF THE BODIES WITH RESPECT TO ANOTHER OF THE REMAINING BODIES, A RADIOISOTOPE SOURCE MOUNTED ON ONE OF THE BODIES, APERTURES IN THE OTHER BODIES, AND MEANS TO EFFECT RELATIVE ROTATION OF THE BODIES TO ALTERNATELY ALIGN AND MISALIGN THE SOURCE AND THE APERTURES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |