| 175-2181 | 34165 | INTER-MARKET INC |
| 2181 | 00303 | SHELLY ASSOCIATES INC. |
| 2181 | 05464 | INDUSTRIAL ELECTRONIC ENGINEERS, INC. |
| 2181D | 08108 | LAMP INDUSTRY FOR USE WITH INDUSTRY DESIGNATIONS AND ABBREVIATIONS FOR LAMPS |
| 2181 | 08806 | GENERAL ELECTRIC CO MINIATURE LAMP PRODUCTS DEPT LIGHTING BUSINESS GROUP |
| 2181 | 95146 | ALCO ELECTRONIC PRODUCTS INC |
| 2181D | 08806 | GENERAL ELECTRIC CO MINIATURE LAMP PRODUCTS DEPT LIGHTING BUSINESS GROUP |
| 65S136871 | 50012 | MOTOROLA COMMUNICATIONS GROUP PARTS DEPT DIV OF MOTOROLA INC |
| 2181D | 57101 | JEMCO ENGINEERING CO |
| 2181D | 62607 | PHILIPS ELECTRONICS NORTH AMERICA CORPORATION DBA PHILIPS LIGHTING DIV PHILIPS LIGHTING COMPANY |
| 87-0407 | 63409 | TREMETRICS INC DIV OF FINNIGAN |
| 549-3001-017 | 74970 | VIKING TECHNOLOGIES, LTD. |
| 39013-2181 | 83961 | AIRCRAFT RADIO INDUSTRIES INC |
| 739WE | K3197 | MICRO DISPLAY DEVICES LTD |
| PKS-192-12 | 03034 | PENN KEYSTONE CORPORATION |
| PKS-192-19 | 03034 | PENN KEYSTONE CORPORATION |
| B1 | 51054 | SORENSON LIGHTED CONTROLS INC |
| PL2181 | 58451 | PRECISION LAMP INC |
| LTX2181 | 61342 | LAMPTRONIX CO LTD |
| CM2181 | 71744 | CHICAGO MINIATURE LIGHTING LLC DBA CHICAGO MINIATURE OPTOELECTRON |
| L.1334 | K0690 | ITT INDUSTRIES CANNON VEAM |