FR401849A - Molds for concrete pipes - Google Patents

Molds for concrete pipes

Info

Publication number
FR401849A
FR401849A FR401849DA FR401849A FR 401849 A FR401849 A FR 401849A FR 401849D A FR401849D A FR 401849DA FR 401849 A FR401849 A FR 401849A
Authority
FR
France
Prior art keywords
molds
concrete pipes
pipes
concrete
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
Other languages
French (fr)
Inventor
Henry Howard Gardner
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 FR401849A publication Critical patent/FR401849A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B21/00—Methods or machines specially adapted for the production of tubular articles
    • B28B21/86—Cores
    • B28B21/88—Cores adjustable, collapsible or expansible

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
FR401849D 1909-04-08 1909-04-08 Molds for concrete pipes Expired FR401849A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR401849T 1909-04-08

Publications (1)

Publication Number Publication Date
FR401849A true FR401849A (en) 1909-09-17

Family

ID=1446629

Family Applications (1)

Application Number Title Priority Date Filing Date
FR401849D Expired FR401849A (en) 1909-04-08 1909-04-08 Molds for concrete pipes

Country Status (1)

Country Link
FR (1) FR401849A (en)

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