I want examples of many different fictional companies and products from literature!

Wikipedia has a http://en.m.wikipedia.org/wiki/Category:Fictional_companies

http://en.wikipedia.org/wiki/Yoyodyne http://www.yoyodyne.com/ http://www.plsearch.com/yoyodyne+inc.

LeFever Parfumaire from Jitterbug Perfume

http://www.youtube.com/watch?v=icDXNHF-oEw.

My personal favorite is http://en.m.wikipedia.org/wiki/Yoyodyne#section_1.

http://en.wikipedia.org/wiki/Tono-Bungay, the wildly successful snake oil patent medicine from HG Wells' http://www.gutenberg.org/files/718/718-h/718-h.htm of the same name.THE SECRET OF VIGOUR, TONO-BUNGAY.Tono-Bungay had some competitors in the scam supplement market, too: "Sorber's Food" and "Cracknell's Ferric Wine". Like good capitalists everywhere, the Tono-Bungay people developed plenty of follow on product lines for various demographic segments -- Tono-Bungay Mouthwash, Tono-Bungay Chocolate, Tono-Bungay Hair Stimulant, Tono-Bungay: Thistle Brand (specifically blended with 11% pure alcohol, for the Scottish market).

Grand Trunk Semaphore Company Which reminds me: the http://www.henry-miller.com/narrative-literature/cosmodemonic-telegraph-company-of-north-america.html, from Henry Miller's semi-autobiographical Tropic of Capricorn.

Encyclopedia Galactica Publishing Company, from Asimov's Foundation Megadodo Publications, from Douglas Adams' Hitchhiker's Guide to the Galaxy

Burleigh & Stronginthearm Weapons Manufacturer Grand Trunk Semaphore Company Sonky Rubber Company--sonkies, the penny-a-packet preventatives Thimble's Pipe and Tobacco Shop Pointer & Pickles--Crystals, Minerals & Tumbling Supplies Higgs & Meakins Fine Chocolatiers Soon Shine Sun Shonky Shop--thrift store Goatberger Publishers of Ankh-Morpork Teemer and Spools Publishers Not sure if you want the restaurants: Gimlet's Hole Foods Delicatessen "We use only the best free range rats!" Famous for: Dwarf Bread Fried rat on a stick (best in the city) Soya rat (vegetarian) Pizza "Quatre rodenti" (with newts and chillis) Pizza "Klatchian Hots" (with salami) Yo Rat! Harga's House Of Ribs Three Jolly Luck Takeaway Fish Bar These are all I can remember off the top of my head. I'm sure someone with a better memory could add more.