Sterile package

Details Sterile package Sterile package

1976-05-05

1977-08-16

Garbe, Stephen P.

Envelopes, wrappers, and paperboard boxes

File folder or file envelope

Hanging type

150 9, 206439, 206459, B65D 3114, B65D 1900

Patent

active

040421708

ABSTRACT:
A sterile package of weldable plastic foil, has a sealing welding seam, joining two mutually opposite portions of said foil, interrupted by a disc shaped valve element of gas pervious material disposed between said portions and defining at least one through hole.

REFERENCES:
patent: 2349247 (1944-05-01), Coghill
patent: 2870954 (1959-01-01), Kulesza
patent: 2899347 (1959-08-01), Kindseth
patent: 3088255 (1963-05-01), Griem
patent: 3217871 (1965-11-01), Lee
patent: 3229813 (1966-01-01), Crowe, Jr. et al.
patent: 3410395 (1968-11-01), Sellers
patent: 3430842 (1969-03-01), Yamaguchi

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