LandOfFree - US Patents - Listing for Geometrical instruments,Straightedge type

Geometrical instruments – Straightedge type – Base attached

Perspective view apparatus

Geometrical instruments – Straightedge type – Base attached

Perspective view drafting device

Geometrical instruments – Straightedge type – Plural straightedges nonadjustably fixed at right angles

Photographic cropping method and device

Geometrical instruments – Straightedge type – Shaft aligning

Pipe fitting aligning device

Geometrical instruments – Straightedge type – Square and fixed straightedge

Pipe flange square and method

Geometrical instruments – Straightedge type – Plural straightedges – relatively moveable

Pipefitter's protractor

Geometrical instruments – Straightedge type – Plural straightedges – relatively moveable

Pipefitters square holder

Geometrical instruments – Straightedge type – Plural straightedges – relatively moveable

Pivot assembly

Geometrical instruments – Straightedge type – Pivot joints

Pivoted two-section carpenter's level

Geometrical instruments – Straightedge type – Square and pivoted straightedge

Pivoting rafter square

Geometrical instruments – Straightedge type – Multiplane angularly adjustable

Pivoting rafter square with multiple insignia

Geometrical instruments – Straightedge type – Plural straightedges nonadjustably fixed at right angles

Planar drafting instrument

Geometrical instruments – Straightedge type – Base attached

Plotting and drafting apparatus with magnetic guide

Geometrical instruments – Straightedge type – Base attached

Plotting board with magnetic pivot

Geometrical instruments – Straightedge type

Plotting device

Geometrical instruments – Straightedge type – Plural straightedges – relatively moveable

Plotting device

Geometrical instruments – Straightedge type – With means for moving straightedge over a surface

Plotting device

Geometrical instruments – Straightedge type – Wall guide and plumb

Plumb post apparatus having bipod legs and method of use...

Geometrical instruments – Straightedge type – Square and sliding nonpivotal straightedge

Polytrack opto-digital drafting machine