Instrument for testing the burst strength of sheet material

Information

  • Patent Grant
  • D315690
  • Patent Number
    D315,690
  • Date Filed
    Thursday, May 11, 1989
    35 years ago
  • Date Issued
    Tuesday, March 26, 1991
    33 years ago
Abstract
Description
Claims
  • The ornamental design of an instrument for testing the burst strength of sheet material, as shown and described.
US Referenced Citations (4)
Number Name Date Kind
377361 Mill Jan 1888
3160002 Lovette Dec 1964
3600940 Schlegel Aug 1971
4735092 Kenny Apr 1988
Non-Patent Literature Citations (1)
Entry
Perkins' Testers by B. P. Perkins, 1983--all pages.