US PATENT SUBCLASS 33 / 403
STRAIGHTEDGE TYPE

Current as of: June, 1999
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403STRAIGHTEDGE TYPE {16}
404  DF  .~> Wall guide and plumb (e.g., building construction) {3}
411  DF  .~> Clapboard marking
412  DF  .~> Shaft aligning
413  DF  .~> Cord type {1}
415  DF  .~> Multiplane angularly adjustable {1}
418  DF  .~> Square and pivoted straightedge {5}
427  DF  .~> Square and sliding nonpivotal straightedge(s) {1}
429  DF  .~> Square and fixed straightedge
430  DF  .~> Base attached {8}
448  DF  .~> With means for moving straightedge over a surface {2}
451  DF  .~> Combined with level
452  DF  .~> Plural straightedges, relatively moveable {6}
474  DF  .~> Plural straightedges nonadjustably fixed at right angles (e.g., T-square, triangles, squares) {7}
482  DF  .~> Plural nonadjustable straightedges forming nonright angles
483  DF  .~> Rules {4}
495  DF  .~> Pivot joints {3}

DEFINITION

Classification: 33/403

STRAIGHTEDGE TYPE:

(under the class definition) Subject matter comprising means having a straight edge, slot, or the like for testing, measuring, fixing, or drawing straight lines.

(1) Note. Straightedges may differ only in their indicia or scales, which differences, however, make some of them more useful for one purpose than any other. Thus, in order to classify such straightedges with those limited by structure to the same purposes, some specific or "ultimate" functions of straightedges have been designated as the bases for classification in some of the subclasses indented under this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1, for various other plotters and for protractors not provided with a straightedge designed to be set at various angles.

32+, for similar devices having scriber attachments.

196, for devices for truing millstone faces that sometimes include straightedge features.

SEE OR SEARCH CLASS 34, Drying and Gas or Vapor Contact With Solids,

89.2, for the combination of a straightedge with a blotter.

225, Severing by Tearing or Breaking,

91, for a straightedge disclosed for use as a tearing edge for web or sheet.

235, Registers, appropriate subclasses for mechanical calculating devices.

434, Education and Demonstration

111, 186, and 239+ for devices for instructing or teaching navigation.