Method of registering film positives or negatives/foils/masks or

Details Method of registering film positives or negatives/foils/masks or Method of registering film positives or negatives/foils/masks or

1984-07-30

1989-05-16

Yost, Frank T.

Cutting

Means to drive or to guide tool

Tool pair positionable as a unit

83451, 83620, 83639, 83691, B26D 508, B26F 114

Patent

active

048298662

ABSTRACT:
A combined pre-press punch for simultaneously punching a symmetrical configuration for film sheet bearing a fixed relationship with desired plate punch configurations and having a floating back punch symmetrically disposed relative to the symmetrical punching configuration.

REFERENCES:
patent: 1634752 (1927-07-01), Lautenschlager
patent: 3152505 (1964-10-01), Alldis
patent: 3198047 (1965-08-01), Munz
patent: 3290975 (1966-12-01), Caesar
patent: 3524372 (1970-08-01), Albrecht
patent: 3863534 (1975-02-01), Scott

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