Patent US3712729A successfully refreshed from Google Patents.
US3712729A
Expired / Lapsed
US
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Document reproduction apparatus
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1971-08-06
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Granted: 1973-01-23
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Expires: 1991-08-06
Abstract
Abstract Apparatus is disclosed for simultaneously receiving images contained on facing pages of a document, the apparatus has an optical element with a first and a second flat surface joined together at one edge of each surface, one of the surfaces parallel to one of the facing pages and the other of the surfaces parallel to another of the pages, and, image receiving system remote from the element with an optical axis parallel to a line bisecting the surfaces.
Inventors
- 👤 Brien J O
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:27
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/6221
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
129 words
Apparatus for simultaneously receiving images containEd on first and second facing pages of a document comprising: a. optical means for defining first and second substantially flat surfaces, said optical means including means for positioning said first surface substantially parallel to said first facing page, for positioning said second surface substantially parallel to said second facing page, and for maintaining said first and second surfaces oriented relative to each other to cause the images on said first page to pass through said first surface and be reflected from said second surface and to cause the images on said second page to pass through said second surface and be reflected from said first surface; and b. image receiving means for simultaneously receiving the reflected images of said first and second pages.
Claim 2
Dependent Claim
129 words
Apparatus for simultaneously receiving images containEd on first and second facing pages of a document comprising: a. optical means for defining first and second substantially flat surfaces, said optical means including means for positioning said first surface substantially parallel to said first facing page, for positioning said second surface substantially parallel to said second facing page, and for maintaining said first and second surfaces oriented relative to each other to cause the images on said first page to pass through said first surface and be reflected from said second surface and to cause the images on said second page to pass through said second surface and be reflected from said first surface; and b. image receiving means for simultaneously receiving the reflected images of said first and second pages.
Claim 3
Dependent Claim
12 words
The apparatus of claim 1 wherein said optical means comprises a prism.
Claim 4
Dependent Claim
10 words
The apparatus of claim 2 wherein said prism is equiangular.
Claim 5
Dependent Claim
22 words
The apparatus of claim 1 wherein said first and second surfaces are in contact with said first and second facing pages, respectively.
Claim 6
Dependent Claim
15 words
The apparatus of claim 1 wherein the image receiving means includes a photo sensitive medium.
Claim 7
Dependent Claim
13 words
The apparatus of claim 5 wherein the image receiving means comprises a camera.
Claim 8
Dependent Claim
35 words
Apparatus as recited in claim 6 wherein said optical means comprises a prism and wherein the optical axis of said camera extends through a common edge joining said first and second surfaces of said prism.
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |