Projection screen

Details Projection screen Projection screen

1980-08-20

1983-04-19

Lewis, Michael L.

Stock material or miscellaneous articles

Composite

Of bituminous or tarry residue

428141, 428152, 428167, 428472, 428650, 428686, G03B 2160

Patent

active

043803687

ABSTRACT:
A projection screen comprises a metal plate member having substantially independent short raised ridges uniformly over the surface. In a process for treating the surface of a metal plate member, a metal plate member and a rough surface contacting the surface of the metal plate member are moved along respective axes intersecting at a certain angle to form raised ridges of typically 100 microns or less in length.

REFERENCES:
patent: Re7657 (1877-05-01), Dimes
patent: 1999042 (1935-04-01), Edwards
patent: 2177572 (1939-10-01), Kogel
patent: 2326042 (1943-08-01), Lessman
patent: 2508058 (1950-05-01), Bradley
patent: 2991544 (1961-07-01), Gotsch et al.
patent: 3408132 (1968-10-01), Chandler et al.
patent: 3964822 (1976-06-01), Yamashita

Affiliated with

Also associated with

Rating

Projection screen does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Projection screen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Projection screen will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-835880