United States Patent 3174628
Inventors:
Kirch Jr., Walter L.
Publication Date:
03/23/1965
Assignee:
Kirch Jr., Walter L.
Other Classes:
248/309.100, 248/224.700, 248/73, 211/105.200
International Classes:
A47G25/06; A47G25/00
Foreign References:
| FR451728A | | | | |
| NO82634A | | | | |
| CH218616A | | | | |