Title:
Rubber coated plywood for road material
Document Type and Number:
United States Patent 2199700
Inventors:
Gramelspacher, Clarence U.
Plaque It!
|
Publication Date:
05/07/1940
View Patent Images:
Images are available in PDF form when logged in. To view PDFs, Login or
Create Account (Free!)
Export Citation:
Assignee:
Gramelspacher, Clarence U.
Primary Class:
Other Classes:
404/32
International Classes:
E01C5/22; E01C5/00