Flexible bag having self-sealing entryway
United States Patent 2698619

Inventors:
Beacham, Robert C.
Butler, William F.
Corcoran, William H.
Publication Date:
01/04/1955
Assignee:
Cutter, Lab
Primary Class:
Other Classes:
604/415, 383/9
International Classes:
A61J1/00
View Patent Images:
Foreign References:
GB321018A