United States Patent 2551727
Inventors:
Costello, Anne C.
Publication Date:
05/08/1951
Assignee:
Costello, Anne C.
International Classes:
A47C16/00; A47C20/00; A61G7/07; A47C16/00; A47C20/00; A61G7/05
Foreign References:
| GB190617202A | | | | |
| CH162605A | | | | |
| GB186481A | | | | |
| DE481498C | | | | |