FR401849A - Molds for concrete pipes - Google Patents
Molds for concrete pipesInfo
- 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
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)
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) |
-
1909
- 1909-04-08 FR FR401849D patent/FR401849A/en not_active Expired
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