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US4001941A Expired / Lapsed US ⏱️ 0.0 years remaining

Graphic reproduction apparatus

Assignee: Individual
•
Filing: 1975-04-21
•
Granted: 1977-01-11
•
Expires: 1995-04-21
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Abstract

Abstract A set of four channel-like clips positioned on opposite edges of a canvas have fasteners to which elastic threads are secured to form a grid over the canvas. Some of the fasteners are spaced one distance apart from each other to form a first grid portion of a small scale and others are spaced apart a distance which is a multiple of the one distance to form a second grid portion of a larger scale. The clips are numbered and lettered. A second identical set of four clips positioned on opposite edges of a picture that is to be painted or drawn on the canvas have strings similarly arranged. The clips may be slid along the edges to locate the grid portions of the desired sizes at desired portions of the picture and the canvas, and the elastic cords over the canvas may be held to one side or temporarily removed during the painting to provide space while only temporarily interrupting the grid patterns.

Inventors

  • 👤 Gustavo Joel Cruz

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 19:03
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/14; B43L13/16

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 144 words
In a graphic reproduction apparatus, canvas means including a rectangular frame and a canvas on the frame, a plurality of fastening means, two pairs of elongated, generally C-shaped mounting clips extending over a substantial portion of the frame, said clips having strip-like jaw portions and loop-like spring portions connecting the jaw portions and adapted to temporarily clip to the front and back of the two pairs of opposite edge portions of the frame and rigidly secured to and each clip carrying a plurality of spaced apart fastening means, and a plurality of highly stretchable elastic strings each secured under tension to a pair of the fastening means, on the opposite clips the strings extending at right angles to each other to form a grid over the canvas, whereby the strings can be temporarily deflected to clear an area on the canvas for working thereon.
Claim 2
Dependent Claim 144 words
In a graphic reproduction apparatus, canvas means including a rectangular frame and a canvas on the frame, a plurality of fastening means, two pairs of elongated, generally C-shaped mounting clips extending over a substantial portion of the frame, said clips having strip-like jaw portions and loop-like spring portions connecting the jaw portions and adapted to temporarily clip to the front and back of the two pairs of opposite edge portions of the frame and rigidly secured to and each clip carrying a plurality of spaced apart fastening means, and a plurality of highly stretchable elastic strings each secured under tension to a pair of the fastening means, on the opposite clips the strings extending at right angles to each other to form a grid over the canvas, whereby the strings can be temporarily deflected to clear an area on the canvas for working thereon.
Claim 3
Dependent Claim 29 words
The graphic reproduction apparatus of claim 1 wherein the mounting clips are adjustable along the edges of the canvas to position the grids over selected portions of the canvas.
Claim 4
Dependent Claim 40 words
The graphic reproduction apparatus of claim 2 including indicia positioned along at least one of the horizontal edge portions of the canvas between the strings and at least one of the vertical edge portions of the canvas between the strings.

References Cited (Backward Citations)

US241801A Cited
US353919A Cited
US574605A Cited
US1017390A Cited
US1282382A Cited
US1622229A Cited
US1667330A Cited
US2263101A Cited
FR876389A Cited
US3209336A Cited
US3086296A Cited
US3660903A Cited
US3939564A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-01-11 1980-07-12 1981-01-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-01-11 1984-07-12 1985-01-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-01-11 1988-07-12 1989-01-11 $7700.00 Window Closed / Lapsed

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