window manufacturer, sliding sash windows, wood windows, window design, casement windows, georgian windows, hardwood windows, tilt turn windows
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Patents

Marvin's products, features and designs are covered by one or more of the following patents or pending patent applications:

  • D330,839
  • D487,012
  • D497,304
  • 4,838,001
  • 5,115,596
  • 5,120,094
  • 5,125,442
  • 5,212,921
  • 5,222,339
  • 5,341,600
  • 5,448,869
  • 6,141,913
  • 6,672,009
  • 6,779,580
  • 20020023387
  • 20040003541
  • 20040139659
  • 20040216852
 
window manufacturer, sliding sash windows, wood windows, window design, casement windows, georgian windows, hardwood windows, tilt turn windows