Title:
Material handling apparatus
United States Patent 3029955


Inventors:
Perkins, William J.
Application Number:
US70088957A
Publication Date:
04/17/1962
Filing Date:
12/05/1957
Assignee:
HARNISCHFEGER CORP
Primary Class:
Other Classes:
212/247, 414/690
International Classes:
B66C23/36; E02F3/30; E02F9/12; F16H57/04
View Patent Images:
US Patent References:
2590787Truck type articulated crane1952-03-25
2558686Portable crane1951-06-26
2524381Machine bearing protecting device1950-10-03
2479838Load handling equipment1949-08-23
2458271Rotating base for load handling machines1949-01-04
2414146Material handling machine1947-01-14
2214485Gear lubrication apparatus1940-09-10
2144760Excavator base and frame1939-01-24
1820201Lubricating system1931-08-25
1763617Worm-drive crane1930-06-10