US3295407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microfilm enlarger
Assignee: CAPS RES Ltd
•
Filing: 1963-08-13
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Granted: 1967-01-03
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Expires: 1983-08-13
Abstract
No abstract record available.
Inventors
- 👤 Jeffree John Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:44
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/326; G03B21/00; G03B21/10; G03B21/11; G03B21/118
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A MICROFILM ENLARGER COMPRISING A LIGHT PROJECTING UNIT, FORMED BY A SEMIELLIPSOIDAL REFLECTOR AND A LAMP, A MICROFILM LOCATING MEANS AND A MAGNIFYING LEN SYSTEM; SAID LIGHT PROJECTING UNIT, SAID MICROFILM LOCATING MEANS AND SAID MAGNIFYING LENS SYSTEM BEING ARRANGED IN THAT ORDER ALONG THE SAME OPTICAL AXIS AND SAID REFLECTOR BEING DISPOSED IN A POSITION TO FOCUS AN IMAGE OF THE CENTER OF SAID LAMP AT A POINT BEYOND A MICROFILM FRAME LOCATED IN SAID MICROFILM LOCATING MEANS; SAID LAMP BEING SURROUNDED BY SAID REFLECTOR AND COAXIAL THEREWITH; AND SAID REFLECTOR HAVING, IN THE AREA OF ITS REFLECTING SURFACE SURROUNDING ITS VERTEX AND SOLELY WITHIN THE INNER HALF OF SAID REFLECTOR ADJACENT ITS VERTEX, SHALLOW DEFORMATIONS ADAPTED TO EVEN OUT THE ILLUMINATION OVER THE CENTER PART OF SAID MICROFILM FRAME.
Claim 2
Dependent Claim
131 words
A MICROFILM ENLARGER COMPRISING A LIGHT PROJECTING UNIT, FORMED BY A SEMIELLIPSOIDAL REFLECTOR AND A LAMP, A MICROFILM LOCATING MEANS AND A MAGNIFYING LEN SYSTEM; SAID LIGHT PROJECTING UNIT, SAID MICROFILM LOCATING MEANS AND SAID MAGNIFYING LENS SYSTEM BEING ARRANGED IN THAT ORDER ALONG THE SAME OPTICAL AXIS AND SAID REFLECTOR BEING DISPOSED IN A POSITION TO FOCUS AN IMAGE OF THE CENTER OF SAID LAMP AT A POINT BEYOND A MICROFILM FRAME LOCATED IN SAID MICROFILM LOCATING MEANS; SAID LAMP BEING SURROUNDED BY SAID REFLECTOR AND COAXIAL THEREWITH; AND SAID REFLECTOR HAVING, IN THE AREA OF ITS REFLECTING SURFACE SURROUNDING ITS VERTEX AND SOLELY WITHIN THE INNER HALF OF SAID REFLECTOR ADJACENT ITS VERTEX, SHALLOW DEFORMATIONS ADAPTED TO EVEN OUT THE ILLUMINATION OVER THE CENTER PART OF SAID MICROFILM FRAME.
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |