Geometrical instruments – Straightedge type – Cord type
Patent
1998-02-12
2000-04-04
Hirshfeld, Andrew H.
Geometrical instruments
Straightedge type
Cord type
33 1G, E04F 2100
Patent
active
060445688
ABSTRACT:
A chalk line dispenser holder system is provided including at least one chalk line dispenser for selectively dispensing a chalk line from a periphery of the dispenser. Also included is a structure connected to an end of the chalk line for resting on a recipient surface onto which chalk is to be applied. A weight of the structure precludes the movement of the end of the chalk line.
REFERENCES:
patent: 1251712 (1918-01-01), Wakimoto
patent: 3078581 (1963-02-01), Foster
patent: 3099091 (1963-07-01), Hindall
patent: 3122836 (1964-03-01), Aciego
patent: 3171210 (1965-03-01), Kundel
patent: 4921507 (1990-05-01), Beyer
patent: 4976041 (1990-12-01), Oshiro et al.
Hirshfeld Andrew H.
Smith R A
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