United States Patent 2531074
Inventors:
Miller, Gerald W.
Publication Date:
11/21/1950
Assignee:
Miller, Gerald W.
Other Classes:
602/13, 128/DIG.020, 601/15
International Classes:
A61H23/04; A61F7/00
Foreign References:
| DE440113C | | | | |
| GB483111A | | | | |
| GB483132A | | | | |