TREA

Expansion coupling for plastic pipe

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Information

  • Patent Grant
  • D270935
  • Patent Number
    D270,935
  • Date Filed
    Monday, January 26, 1981
    44 years ago
  • Date Issued
    Tuesday, October 11, 1983
    41 years ago
  • Inventors
  • Examiners
    • Largen; James R.
    Agents
    • Boswell; K. H.
    • O'Brian; Edward D.
  • US Classifications
    Field of Search
    • US
    • D23 40-47
    • 285 45
    • 285 226
    • 285 227
    • 285 228
    • 285 229
    • 285 300
    • 285 301
    • 285 371
  • International Classifications
    • Term of Grant
      14Years
Information
Abstract
Description
Claims
  • The ornamental design for an expansion coupling for plastic pipe, substantially as shown and described.
US Referenced Citations (11)
Number Name Date Kind
D136056 Rocic Jul 1943
D193323 Hahn et al. Jul 1962
D221942 Halling Sep 1971
1726483 Giesler Aug 1929
1786506 Ray Dec 1930
2565296 Chyle Aug 1951
2911238 Myers et al. Nov 1959
2931669 McDonald Apr 1960
3495856 Daymond Feb 1970
3837685 Miller Sep 1974
4350372 Logsdon Sep 1982
Foreign Referenced Citations (4)
Number Date Country
342692 Oct 1921 DEX
2114180 Sep 1972 DEX
2318379 Feb 1977 FRX
518754 Mar 1940 GBX