Photocopying – Projection printing and copying cameras – Detailed holder for photosensitive paper
Patent
1982-03-15
1984-07-17
Hayes, Monroe H.
Photocopying
Projection printing and copying cameras
Detailed holder for photosensitive paper
G03B 2758
Patent
active
044602715
ABSTRACT:
A device for cropping photographs can be constructed utilizing upper and lower frames which are movable with respect to one another. Each of the frames has two edges located at right angles to one another; the frames are located one above another so that the edges of the frames define a rectilinear opening. The size of this opening can be varied by moving the two frames in a linear manner. The ratio between the lengths of the sides of the opening can be varied by varying the relative positions of the upper and lower frames including the noted edges.
REFERENCES:
patent: 1073169 (1913-09-01), Roberts
patent: 1116888 (1914-11-01), Heyn
patent: 1277318 (1918-08-01), Johnson
patent: 1330353 (1920-02-01), Smith
patent: 1662066 (1928-03-01), Krumm
patent: 1976278 (1934-10-01), Cook
patent: 2246920 (1941-06-01), Kromholz
patent: 2342525 (1944-02-01), Berry
patent: 2403614 (1946-07-01), Ross
patent: 2412507 (1946-12-01), Hunter
patent: 2544883 (1951-03-01), Isaac et al.
patent: 2560937 (1951-07-01), Ens
patent: 2626467 (1953-01-01), Abbott
patent: 2677893 (1954-05-01), Wahl
patent: 2702944 (1955-03-01), Lane et al.
patent: 3470644 (1969-10-01), Craig
patent: 3709591 (1973-01-01), Alzmann
Boswell K. H.
Hayes Monroe H.
O'Brian Edward D.
LandOfFree
Cropping device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cropping device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cropping device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1488300