US220628A - Improvement in car-ventilators - Google Patents

Improvement in car-ventilators Download PDF

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Publication number
US220628A
US220628A US220628DA US220628A US 220628 A US220628 A US 220628A US 220628D A US220628D A US 220628DA US 220628 A US220628 A US 220628A
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US
United States
Prior art keywords
ventilators
car
improvement
ventilatot
luoas
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Expired - Lifetime
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Publication date
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Publication of US220628A publication Critical patent/US220628A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D27/00—Heating, cooling, ventilating, or air-conditioning
    • B61D27/009—Means for ventilating only

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Treating Waste Gases (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Description

0. LUOAS. oar-ventilatot.
No. 220,628- Patented oct. I4, l879.
US220628D Improvement in car-ventilators Expired - Lifetime US220628A (en)

Publications (1)

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US220628A true US220628A (en) 1879-10-14

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ID=2290028

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US220628D Expired - Lifetime US220628A (en) Improvement in car-ventilators

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