DE174211C - - Google Patents
Info
- Publication number
- DE174211C DE174211C DENDAT174211D DE174211DA DE174211C DE 174211 C DE174211 C DE 174211C DE NDAT174211 D DENDAT174211 D DE NDAT174211D DE 174211D A DE174211D A DE 174211DA DE 174211 C DE174211 C DE 174211C
- Authority
- DE
- Germany
- Prior art keywords
- stick
- umbrella
- tube
- constriction
- tapered
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
- B21C37/16—Making tubes with varying diameter in longitudinal direction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Tubes (AREA)
- Assembled Shelves (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE174211C true DE174211C (enrdf_load_stackoverflow) |
Family
ID=438964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT174211D Active DE174211C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE174211C (enrdf_load_stackoverflow) |
-
0
- DE DENDAT174211D patent/DE174211C/de active Active
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