United States Patent 2887711
Inventors:
Hutchinson, Harold D.
Publication Date:
05/26/1959
Assignee:
Hutchinson, Harold D.
Other Classes:
492/17, 15/236.010, D04/122, 15/118, 219/227, 219/201
Foreign References:
| CH113360A | | | | |
| GB246237A | | | | |
| CH264939A | | | | |
| FR661393A | | | | |