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:
Jun. 06, 1978
Filed:
Jun. 20, 1977
Applicant:
Inventors:
Edwin H Land, Cambridge, MA (US);
Albert J Bachelder, Lexington, MA (US);
Sarah H Perry, Lexington, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264295 ; 264296 ; 264320 ; 264322 ;
Abstract
A method for making a self-retracting imbibition chamber by cutting a sheet, folding the sides into flanges, fluting the flanges followed by coiling and curing the material into a spring-like state.