Autori
- Wagner Franz Xavier (4 schede)
- Wallner (2 schede)
- Walton Engineering Co. Ltd. (1 scheda)
- Wanderer Fahrradwerke, vormals Winklhofer & Jaenicke AG (2 schede)
- Wanderer Werke AG (1 scheda)
- Waterhouse John (3 schede)
- Watt James (5 schede)
- Watt Radio (2 schede)
- W.C. Heraeus gmbh (1 scheda)
- Webster-Chicago Corporation (2 schede)
- Wedgwood Josiah (2 schede)
- Wegmann - Suisse (1 scheda)
- WEHRLE (1 scheda)
- Weis (1 scheda)
- Weiss (1 scheda)
- Welch Allyn (2 schede)
- Welharticky und Pachner (1 scheda)
- Werner e Pfleiderer (1 scheda)
- Wernicke, Edelmann & Company (1 scheda)
- Western (7 schede)
- Western Electric (10 schede)
- Western Electric Company (1 scheda)
- Western Electric Italiana (1 scheda)
- WESTERN ELECTRIC ITALIANA (1 scheda)
- Western Electric Manufacturing Company (2 schede)
- Westinghouse (14 schede)
- Westinghouse El. Int. (1 scheda)
- Weston (1 scheda)
- Weston Electrical Instrument Corp. (2 schede)
- Wheatstone , Charles (1 scheda)
- White Anthony C. (1 scheda)
- White James (2 schede)
- Wiedemann Gustav Heinrich (1 scheda)
- Wilcox-Gay Corporation (1 scheda)
- Wild Heerbrugg (1 scheda)
- Wild Heerbrugg AG, Switzerland (1 scheda)
- Wild Heerbrugg - Switzerland (1 scheda)
- Wildt & Co Ltd - Machine Builders, Leicester (England) (1 scheda)
- Wilh. Lambrecht, Gottingen (1 scheda)
- Will (1 scheda)
- Williams, J. K. (1 scheda)
- Williams John Newton (2 schede)
- Williams Manufacturing Company (3 schede)
- Williams Typewriter Company (2 schede)
- William Wahl Instruments (1 scheda)
- Wimshurst, James (1 scheda)
- Windlik (1 scheda)
- Winslow co. (1 scheda)
- Wolf, Richard (4 schede)
- Wollaston William Hyde (2 schede)
- Wollensak Optical Company (4 schede)
- Woodstock Typewriter Co. (2 schede)
- Woodward Oscar (3 schede)
- W. Pabish S.p.A Milano (1 scheda)
- Wulff Jacob (1 scheda)
- Wunder (1 scheda)
- Wundercart (8 schede)
- WUNDER SA.BI. S.r.l. (1 scheda)
- Wyckoff, Seamans & Benedict (5 schede)