Patents Represented by Law Firm Patterson, Mark J.
  • Interior air vent shield
    Patent number: 4712343
    Abstract: An inexpensive and re-usable shield for temporarily covering and protecting interior vent openings in residential and commercial HVAC systems. The rectangular plate is attached to or formed with a smaller rectangular block which are each sized and grooved to allow the shield to be universally used in all standard size floor and baseboard vent openings.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: December 15, 1987
    Inventors: J. C. Dearing, Donald R. Rich