Title:
Arrangement for controlling the flow of people in the entrance of an airraid or other shelter
United States Patent 3380191
Inventors:
Joachim, Neeff
Rudolph, Seiz
Michael, Funk
Application Number:
US43913565A
Publication Date:
04/30/1968
Filing Date:
03/08/1965
Assignee:
Bochumer, Eisen Heintzmann
Primary Class:
Other Classes:
49/68, 987/30, 987/116, 987/216, 987/232
International Classes:
E04H9/04; E06B5/00
View Patent Images:
US Patent References:
3222805Cattle gate1965-12-14
3079711One-way animal gate1963-03-05
2760567Flexible doors1956-08-28
2691231Automatic animal gate1954-10-12
2564067Door operation and control1951-08-14
1390725Automatically-locked metering door and gate device1921-09-13
0986574N/A1911-03-14
0460719N/A1891-10-06
0428905N/A1890-05-27
0220624N/A1879-10-14
Foreign References:
DK86397A