United States Patent 2683625
Inventors:
Fisher, Emery J.
Publication Date:
07/13/1954
Assignee:
Fisher, Emery J.
Other Classes:
427/426, 239/336, 239/600
International Classes:
E04F21/12; E04F21/02
US Patent References:
| 2543517 | Apparatus for combining and emplacing cementitious substances | | | |