| 53X | 00303 | SHELLY ASSOCIATES INC. |
| 53X | 08108 | LAMP INDUSTRY FOR USE WITH INDUSTRY DESIGNATIONS AND ABBREVIATIONS FOR LAMPS |
| 53X | 08806 | GENERAL ELECTRIC CO MINIATURE LAMP PRODUCTS DEPT LIGHTING BUSINESS GROUP |
| 53X | 34165 | INTER-MARKET INC |
| 53X | 52361 | COMMUNICATION SYSTEMS DIV NORTH AMERICAN PHILIPS CORP |
| 53X | 62607 | PHILIPS ELECTRONICS NORTH AMERICA CORPORATION DBA PHILIPS LIGHTING DIV PHILIPS LIGHTING COMPANY |
| 8MB15021 | 00501 | NEW HOLLAND N.V.NC. |
| A51985 | 42498 | DAR ELECTRONICS INC DBA NATIONAL RADIO CO |
| 65S134111 | 50012 | MOTOROLA COMMUNICATIONS GROUP PARTS DEPT DIV OF MOTOROLA INC |
| PL53X | 58451 | PRECISION LAMP INC |
| LTX53X | 61342 | LAMPTRONIX CO LTD |
| 87-0035 | 63409 | TREMETRICS INC DIV OF FINNIGAN |
| 7231 | 74400 | HOBBS CORP |
| 53X | 94988 | COOPER INDUSTRIES INC CHAMPION AVIATION PRODUCTS |