Title:
Interlocking grating and framing system for trench drains
United States Patent 3221616


Inventors:
Flegel, George J.
Application Number:
US10331061A
Publication Date:
12/07/1965
Filing Date:
04/17/1961
Assignee:
JOSAM MFG CO
Primary Class:
Other Classes:
49/465, D25/154
International Classes:
E03F5/046; E03F5/06
View Patent Images:
US Patent References:
2436593Combined curb and sewer1948-02-24
2159752Curb inlet1939-05-23
1721464Pavement construction1929-07-16
1384712N/A1921-07-12
1334222Interlocked flooring1920-03-16
0557786N/A1896-04-07
0250210N/A1881-11-29
Foreign References:
AU164630B
GB185800650A
GB189110551A
GB189423575A1895-10-05
GB190125846A1902-11-13
GB477124A1937-12-22