~Individually Owned Patent |
8 |
5 |
7 |
8 |
7 |
5 |
4 |
5 |
1 |
10 |
2 |
3 |
4 |
1 |
2 |
2 |
1 |
2 |
2 |
5 |
2 |
1 |
3 |
3 |
5 |
5 |
11 |
4 |
6 |
11 |
2 |
10 |
12 |
8 |
10 |
5 |
2 |
184 |
WESTINGHOUSE AIR BRAKE COMPANY |
4 |
8 |
11 |
8 |
7 |
7 |
4 |
7 |
7 |
4 |
2 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
1 |
4 |
2 |
0 |
0 |
1 |
0 |
0 |
0 |
82 |
GENERAL SIGNAL CORPORATION |
6 |
4 |
9 |
7 |
7 |
5 |
6 |
6 |
5 |
5 |
2 |
0 |
1 |
3 |
0 |
1 |
1 |
3 |
2 |
2 |
2 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
78 |
UNION SWITCH & SIGNAL INC. |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
4 |
5 |
2 |
8 |
6 |
5 |
0 |
4 |
2 |
6 |
4 |
1 |
0 |
48 |
WESTINGHOUSE ELECTRIC CORP. |
0 |
2 |
1 |
2 |
6 |
2 |
2 |
9 |
2 |
0 |
0 |
0 |
2 |
2 |
2 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
33 |
GENERAL ELECTRIC COMPANY |
7 |
1 |
2 |
2 |
1 |
2 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
1 |
1 |
3 |
2 |
25 |
AMERICAN STANDARD, INC. |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
4 |
3 |
4 |
1 |
3 |
1 |
1 |
4 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
21 |
ABEX CORPORATION |
5 |
0 |
2 |
1 |
2 |
0 |
1 |
0 |
1 |
2 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
19 |
ABC RAIL PRODUCTS CORPORATION |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
1 |
1 |
4 |
3 |
4 |
0 |
2 |
1 |
0 |
0 |
0 |
0 |
18 |
VOEST-ALPINE EISENBAHNSYSTEMS AKTIENGESELLSCHAFT |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
1 |
1 |
3 |
1 |
0 |
1 |
2 |
2 |
3 |
2 |
0 |
0 |
18 |
HARMON INDUSTRIES, INC. |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
1 |
2 |
0 |
1 |
1 |
2 |
2 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
16 |
BRITISH RAILWAYS BOARD |
0 |
0 |
1 |
2 |
0 |
4 |
2 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
14 |
SERVO CORPORATION OF AMERICA |
1 |
0 |
2 |
0 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
0 |
1 |
2 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
14 |
INTERNATIONAL STANDARD ELECTRIC CORPORATION (ITT CORP. UNIT) |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
4 |
2 |
3 |
0 |
0 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
12 |
SIEMENS AKTIENGESELLSCHAFT |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
2 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
2 |
1 |
1 |
1 |
0 |
12 |
ELEKTRO-THERMIT GMBH |
0 |
0 |
0 |
1 |
4 |
1 |
1 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
11 |
GENERAL RAILWAY SIGNAL COMPANY |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
2 |
2 |
0 |
3 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
11 |
WESTINGHOUSE BRAKE AND SIGNAL CO. LIMITED |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
3 |
0 |
0 |
0 |
1 |
0 |
1 |
2 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
11 |
SAFETRAN SYSTEMS CORPORATION |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
3 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
9 |
BWG BUTZBACHER WEICHENBAU GMBH |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
3 |
0 |
2 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
8 |
HITACHI, LTD |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
7 |
KABUSHIKI KAISHA MARUTO SEISAKUSHO |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
7 |
MESSERSCHMITT-BOLKOW-BLOHM GMBH |
0 |
0 |
0 |
0 |
0 |
3 |
4 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
7 |
NEW YORK AIR BRAKE CORPORATION |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
4 |
0 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
7 |
WESTINGHOUSE BRAKE & SIGNAL HOLDINGS LTD. |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
2 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
7 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
6 |
VAE NORTRAK NORTH AMERICA, INC. |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
0 |
1 |
2 |
1 |
6 |
JAPANESE NATIONAL RAILWAYS |
0 |
0 |
0 |
0 |
1 |
0 |
2 |
0 |
0 |
1 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
5 |
PULLMAN, INCORPORATED |
0 |
3 |
0 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
5 |
PULSE ELECTRONICS, INC. |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
5 |
SOUTHERN PACIFIC TRANSPORTATION CO. |
0 |
0 |
0 |
1 |
2 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
5 |
VOEST-ALPINE MASCHINENBAU GESELLSCHAFT M.B.H. |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
3 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
5 |