FR23819E - Perfectionnements apportés aux tubes métalliques - Google Patents
Perfectionnements apportés aux tubes métalliquesInfo
- Publication number
- FR23819E FR23819E FR23819A FR23819DA FR23819E FR 23819 E FR23819 E FR 23819E FR 23819 A FR23819 A FR 23819A FR 23819D A FR23819D A FR 23819DA FR 23819 E FR23819 E FR 23819E
- Authority
- FR
- France
- Prior art keywords
- improvements made
- metal tubes
- tubes
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/151—Making tubes with multiple passages
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR23819T | 1917-09-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR23819E true FR23819E (fr) | 1921-12-30 |
Family
ID=8662516
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR23819A Expired FR23819E (fr) | 1917-09-24 | 1917-09-24 | Perfectionnements apportés aux tubes métalliques |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR23819E (fr) |
-
1917
- 1917-09-24 FR FR23819A patent/FR23819E/fr not_active Expired
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