Gas separation: apparatus – Electric field separation apparatus – Electrode cleaner – apparatus part flusher – discharger – or...
Patent
1977-01-19
1978-06-13
Welsh, John D.
Gas separation: apparatus
Electric field separation apparatus
Electrode cleaner, apparatus part flusher, discharger, or...
96200, 96 43, G03C 504
Patent
active
040946800
ABSTRACT:
A film matrix is reproduced and altered by mounting a replacing image on a light transparent sheet over the image to be replaced on the film matrix. The image to be replaced is obliterated. The mounted replacing image and the film matrix are then double exposed on another piece of film to produce another film matrix with the replacing image appropriately inserted.
REFERENCES:
patent: 3717975 (1973-02-01), Bloom
Castcraft Industries, Inc.
Rockman Howard B.
Saret Larry L.
Welsh John D.
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