Laser-beam pointer

Details Laser-beam pointer Laser-beam pointer

1990-01-09

1991-07-02

Burke, Wallace R.

Office supplies; artists and teachers materials

Teaching material

D26 42, 434433

Patent

active

D03179419

REFERENCES:
patent: D279821 (1985-07-01), Ma
patent: 283041 (1883-08-01), Tarr
patent: D288337 (1987-02-01), Sloan
patent: 1664257 (1927-08-01), McCullough

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