case-making machine
51Apple IIc Plus — Mac specs| KB (up to 1.125 MB)|RAMtype=|Discontinued=November 1990 The Apple IIc Plus was the sixth and final model in the Apple II line of personal computers, produced by Apple Computer. The Plus in the name was a reference to the additional… …
52Envelope — This article is about envelopes in packaging. For other uses, see Envelope (disambiguation). Front of an envelope mailed in the U.S. in 1906, with a postage stamp and address …
53Envelope manufacture — Envelope production, whether by hand or by machine, involves the manufacture of envelopes to carry mail. Nearly all of the estimated 450 billion envelopes made each year worldwide are machine made.History of envelopesPrior to 1845, hand made… …
54Walkman — This article is about the Walkman brand. For information about the generic item, see Personal stereo. Walkman Walkman Line up in USA (2011) …
55Papermaking — [ thumb|230px|right|The Diamond Sutra of the Chinese Tang Dynasty, the oldest dated printed book in the world, found at Dunhuang, from 868 AD.] Papermaking is the process of making paper, a material which is used ubiquitously today for writing… …
56Air conditioning — The term air conditioning refers to the cooling and dehumidification of indoor air for thermal comfort. In a broader sense, the term can refer to any form of cooling, heating, ventilation or disinfection that modifies the condition of air.… …
57Refrigeration — Commercial refrigeration Ice is used to refriger …
58Surplus value — is a concept created by Karl Marx in his critique of political economy, where its ultimate source is unpaid surplus labor performed by the worker for the capitalist, serving as a basis for capital accumulation.The German equivalent word Mehrwert… …
59Rope — This article is about non metallic ropes. For other uses, see Rope (disambiguation). Coils of rope used for long line fishing A rope is a length of fibres, twisted or braided together to improve strength for pulling and connecting. It has tensile …
60Cray-1 — preserved at the Deutsches Museum Cray …
