NL44849C - - Google Patents
Info
- Publication number
- NL44849C NL44849C NL44849DA NL44849C NL 44849 C NL44849 C NL 44849C NL 44849D A NL44849D A NL 44849DA NL 44849 C NL44849 C NL 44849C
- Authority
- NL
- Netherlands
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B21/00—Pilgrim-step tube-rolling, i.e. pilger mills
-
- 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
- B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls
- B21C37/202—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes and tubes with decorated walls with guides parallel to the tube axis
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR814527T | 1936-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL44849C true NL44849C (de) |
Family
ID=9266762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL44849D NL44849C (de) | 1936-02-27 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2160742A (de) |
| BE (1) | BE416700A (de) |
| FR (1) | FR814527A (de) |
| NL (1) | NL44849C (de) |
-
0
- BE BE416700D patent/BE416700A/xx unknown
- NL NL44849D patent/NL44849C/xx active
-
1936
- 1936-02-27 FR FR814527D patent/FR814527A/fr not_active Expired
- 1936-08-13 US US95909A patent/US2160742A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR814527A (fr) | 1937-06-24 |
| BE416700A (de) | |
| US2160742A (en) | 1939-05-30 |