TREA

Door control system

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Information

  • Patent Grant
  • D268322
  • Patent Number
    D268,322
  • Date Filed
    Monday, November 24, 1980
    45 years ago
  • Date Issued
    Tuesday, March 22, 1983
    42 years ago
  • US Classifications
    Field of Search
    • US
    • D08 330
    • 016 72
    • 016 76
    • 016 71
    • 016 78
    • 016 80
    • 016 85
  • International Classifications
    • Term of Grant
      14Years
Information
Abstract
Description
Claims
  • The ornamental design for a door control system, as shown and described.
US Referenced Citations (5)
Number Name Date Kind
D120752 Gallinger May 1940
D214028 Weiner May 1969
D261099 Russell Oct 1981
2946081 Juergens Jul 1960
3975791 Hettich et al. Aug 1976