FR450498A - Traverse de chemin de fer - Google Patents

Traverse de chemin de fer

Info

Publication number
FR450498A
FR450498A FR450498A FR450498DA FR450498A FR 450498 A FR450498 A FR 450498A FR 450498 A FR450498 A FR 450498A FR 450498D A FR450498D A FR 450498DA FR 450498 A FR450498 A FR 450498A
Authority
FR
France
Prior art keywords
railway crossing
railway
crossing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR450498A
Other languages
English (en)
Inventor
Jackson Montgomery Roe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of FR450498A publication Critical patent/FR450498A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
    • E01B3/16—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from steel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
FR450498A 1912-04-20 1912-11-13 Traverse de chemin de fer Expired FR450498A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US450498XA 1912-04-20 1912-04-20

Publications (1)

Publication Number Publication Date
FR450498A true FR450498A (fr) 1913-03-26

Family

ID=21935742

Family Applications (1)

Application Number Title Priority Date Filing Date
FR450498A Expired FR450498A (fr) 1912-04-20 1912-11-13 Traverse de chemin de fer

Country Status (1)

Country Link
FR (1) FR450498A (fr)

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