Patent US3153293A successfully refreshed from Google Patents.
US3153293A
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Assignee: Argus Inc
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Filing: 1959-02-27
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Granted: 1964-10-20
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Expires: 1979-02-27
Abstract
No abstract record available.
Inventors
- 👤 Jack B Clarkson
- 👤 Charles D Seekings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:03
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/02; G02B27/022; G02B27/024; G02B27/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A TRANSPARENCY VIEWER COMPRISING A VIEWING LENS, A LIGHT SOURCE, A TRANSPARENCY CARRIER HAVING A TRANSPARENCY RETAINER POSITION THEREON, SAID CARRIER BEING MOUNTED BETWEEN THE LENS AND LIGHT SOURCE FOR RECIPROCATION BETWEEN A TRANSPARENCY LOADING POSITION AND A VIEWING POSITION, AND BIASING MEANS CONTACTING THE CARRIER AND FORMED TO CONTINUOUSLY URGE SAID CARRIER TOWARD THE LOADING POSITION, SAID BIASING MEANS HAVING A LIFT OPERABLE TO SPACEDLY SUPPORT THE TRANSPARENCY FROM SAID RETAINER PORTION IN THE LOADING POSITION AND UPON MOVE-
Claim 2
Dependent Claim
80 words
A TRANSPARENCY VIEWER COMPRISING A VIEWING LENS, A LIGHT SOURCE, A TRANSPARENCY CARRIER HAVING A TRANSPARENCY RETAINER POSITION THEREON, SAID CARRIER BEING MOUNTED BETWEEN THE LENS AND LIGHT SOURCE FOR RECIPROCATION BETWEEN A TRANSPARENCY LOADING POSITION AND A VIEWING POSITION, AND BIASING MEANS CONTACTING THE CARRIER AND FORMED TO CONTINUOUSLY URGE SAID CARRIER TOWARD THE LOADING POSITION, SAID BIASING MEANS HAVING A LIFT OPERABLE TO SPACEDLY SUPPORT THE TRANSPARENCY FROM SAID RETAINER PORTION IN THE LOADING POSITION AND UPON MOVE-
References Cited (Backward Citations)
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US2520432A
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US2720045A
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US2666360A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |