United States Patent 3166292
Inventors:
Forman, Benjamin G.
Publication Date:
01/19/1965
Other Classes:
261/DIG.038, 261/66, 251/368
International Classes:
F02M3/10; F02M19/04; F02M3/00; F02M19/00
US Patent References:
| 2942407 | Plastic traveler with wear resistant roller | | | |