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Class 33/40 - Set shift


Subclass of Class 33 - Geometrical instruments
Definition: Devices designed for ruling parallel lines having a positive
No. of patents: 3
Last issue date: 07/24/2007


NumberTitleIssue Date
7246446Adjustable guide rail for hand tools
A method and apparatus are provided for constructing and operating an adjustable guide rail for hand tools, by attaching an elongated blade to a guide with a locking ratcheting apparatus. The locking ratcheting apparatus is thumb-operable. The elongated blade includ...
07/24/2007
5658245Therapeutic tension applying travel aid apparatus attachable to a seat
A therapeutic tension applying apparatus for applying tensile stress on a persons neck and spine while traveling, the apparatus is attachable to a vehicle seat or a mounting surface such as a ceiling within a vehicle. The apparatus provides adjustable, va...
08/19/1997
4574483Measurement of degree of offset of attachment position of drafting pen in coordinate plotter
The offset of the attachment position of each drafting pen in a coordinate plotter can be measured by drawing, with a standard drafting pen different from the first-mentioned plural drafting pen, main scale line segments dividing a predetermined distance ...
03/11/1986
 
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