The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 1984
Filed:
Nov. 05, 1982
Applicant:
Inventors:
Fred R Paul, Jr, Chisago, MN (US);
James S Mrozinski, Oakdale, MN (US);
Assignee:
Minnesota Mining and Manufacturing Co., St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
215365 ; 40310 ; 215230 ; 220377 ; 350359 ;
Abstract
There is provided a tamper evident container seal comprising a normally transparent polymer film which can be rendered translucent by stretching and transparent by relaxing. There is also provided a polymer film useful as a seal of the same type of film which bears an image which is not readily visible when the film is relaxed, but becomes readily visible when the film is stretched.