Illumination – With liquid container
Patent
1981-02-20
1983-07-05
Lechert, Jr., Stephen J.
Illumination
With liquid container
362109, 362119, 362120, 362 32, F21V 3300
Patent
active
043921841
ABSTRACT:
This invention is a unique method and apparatus for illuminating carpenter's and mechanic's levels so that true readings may be obtained and the like, in shaded areas or under poor lighting conditions. The method and apparatus are characterized by the insertion of an illuminating device into the level in such manner that illumination travels through the leveling medium eliminating shadows normally caused. The invention includes the method for insertion within existing levels.
REFERENCES:
patent: 1818843 (1931-08-01), Dill
patent: 3114507 (1963-12-01), Dommer
Bennett Harvey G.
Hearold Owen E.
Lechert Jr. Stephen J.
Schulze Herbert C.
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