Patent US2868992A successfully refreshed from Google Patents.
US2868992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactor viewing apparatus
Assignee: Individual
•
Filing: 1945-02-12
•
Granted: 1959-01-13
•
Expires: 1965-02-12
Abstract
No abstract record available.
Inventors
- 👤 George S Monk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:27
CPC Classifications
G; G21; G21C; G21C17/00; G21C17/08; G21C19/00; G21C19/14; G21F; G21F7/00; G21F7/02; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A RADIATION ABSORBING OPTICAL SYSTEM FOR VIEWING RADIOACTIVE OBJECTS COMPRISING A VIEWING TUBE FLANGED AT EACH END, A LENS AT ONE FLANGED END OF SAID TUBE, SAID LENS BEING MADE OF A POLYMERIZED ORGANIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF METHYL METHACRYLATE, STYRENE, CYCLOHEXYL METHACRYLATE AND MIXTURES THEREOF, MEANS FOR MAINTAINING SAID LENS IN LIQUID-TIGHT CONTACT WITH SAID FLANGED END OF THE TUBE, A RADIATION ABSORBENT LIGHT TRANSPARENT SOLID MEMBER AT THE OPPOSITE FLANGED END OF SAID TUBE, MEANS FOR MAINTAINING SAID TRANSPARENT
Claim 2
Dependent Claim
84 words
A RADIATION ABSORBING OPTICAL SYSTEM FOR VIEWING RADIOACTIVE OBJECTS COMPRISING A VIEWING TUBE FLANGED AT EACH END, A LENS AT ONE FLANGED END OF SAID TUBE, SAID LENS BEING MADE OF A POLYMERIZED ORGANIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF METHYL METHACRYLATE, STYRENE, CYCLOHEXYL METHACRYLATE AND MIXTURES THEREOF, MEANS FOR MAINTAINING SAID LENS IN LIQUID-TIGHT CONTACT WITH SAID FLANGED END OF THE TUBE, A RADIATION ABSORBENT LIGHT TRANSPARENT SOLID MEMBER AT THE OPPOSITE FLANGED END OF SAID TUBE, MEANS FOR MAINTAINING SAID TRANSPARENT
References Cited (Backward Citations)
US57602A
Cited
US183443A
Cited
GB190106194A
Cited
US1269422A
Cited
US1469973A
Cited
US2193742A
Cited
US1880806A
Cited
US2206634A
Cited
US2297240A
Cited
CH233011A
Cited
US2312542A
Cited
US2405301A
Cited
US2423492A
Cited
US2708656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |