Chalk line marking apparatus

Details Chalk line marking apparatus Chalk line marking apparatus

1991-07-08

1993-09-07

Ansher, Bernard

Tools and hardware

Other tools and implements

With relative movement of parts while performing function

D 8 14

Patent

active

D03390446

REFERENCES:
patent: 997803 (1911-07-01), Giffin
patent: 3046663 (1962-07-01), Romero
patent: 3078581 (1963-02-01), Foster
patent: 3099091 (1963-07-01), Hindall
patent: 3721009 (1973-03-01), Lucich
patent: 4192078 (1980-03-01), Lore
patent: 4660291 (1987-04-01), Dehn
patent: 4773162 (1988-09-01), Lin
patent: 4926562 (1990-05-01), Hwu

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