Patents

The following Letters Patent cover one or more of the products manufactured by D-Mark, Inc.

United States

4,227,904

4,699,681

5,124,177

5,338,340

5,569,489

6,878,193

Canadian

1,098,452

1,337,550

2,222,122

2,454,738

Mexican

244,272

Foreign Patents Issued

Trademarks

The following are registered Trademarks of D-Mark, Inc.

Adsorball

Carbonweb

OdorGuard

D-Mark

A Breath of Fresh Air

The Carbon Filter Specialists