Chalk line helper

Details Chalk line helper Chalk line helper

1998-05-19

2000-10-31

Bennett, G. Bradley

Geometrical instruments

Straightedge type

Wall guide and plumb

33414, B44D 338

Patent

active

061383708

ABSTRACT:
A chalk line helper having a generally planar top section, a generally planar bottom section, the bottom section having a plurality of bottom projections positioned perpendicular to the bottom section, a front leading edge, a rear following edge, a first side section having a first wing-shaped projection, the first wing-shaped projection generally slanted toward the rear following edge and inward toward the top section, and a second side section having a second wing-shaped projection, the second-wing shaped projection generally slanted toward the rear following edge and inward toward the top section.

REFERENCES:
patent: Re14947 (1920-09-01), Ballou
patent: 74352 (1868-02-01), Hart et al.
patent: 558113 (1896-04-01), Rodick
patent: 605978 (1898-06-01), Shepherd
patent: 1297584 (1919-03-01), Mock
patent: 1373884 (1921-04-01), Gregory
patent: 4926562 (1990-05-01), Hwu

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