FR556430A - Improvements in the construction of metal screens - Google Patents

Improvements in the construction of metal screens

Info

Publication number
FR556430A
FR556430A FR556430DA FR556430A FR 556430 A FR556430 A FR 556430A FR 556430D A FR556430D A FR 556430DA FR 556430 A FR556430 A FR 556430A
Authority
FR
France
Prior art keywords
construction
metal screens
screens
metal
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)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR556430A publication Critical patent/FR556430A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B21D31/02—Stabbing or piercing, e.g. for making sieves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR556430D 1921-09-29 1922-09-21 Improvements in the construction of metal screens Expired FR556430A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US556430XA 1921-09-29 1921-09-29

Publications (1)

Publication Number Publication Date
FR556430A true FR556430A (en) 1923-07-20

Family

ID=21999211

Family Applications (1)

Application Number Title Priority Date Filing Date
FR556430D Expired FR556430A (en) 1921-09-29 1922-09-21 Improvements in the construction of metal screens

Country Status (1)

Country Link
FR (1) FR556430A (en)

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