IT454428A - - Google Patents
Info
- Publication number
- IT454428A IT454428A IT454428DA IT454428A IT 454428 A IT454428 A IT 454428A IT 454428D A IT454428D A IT 454428DA IT 454428 A IT454428 A IT 454428A
- Authority
- IT
- Italy
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/02—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor by means of tools with abrading surfaces corresponding in shape with the lenses to be made
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR806532X | 1949-04-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT454428A true IT454428A (en) |
Family
ID=9251960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT454428D IT454428A (en) | 1949-04-21 |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE806532C (en) |
| FR (1) | FR984895A (en) |
| IT (1) | IT454428A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH651773A5 (en) * | 1983-03-31 | 1985-10-15 | Comadur Sa | PROCESS FOR FORMING A CONVERGENT LENS IN A PLATE OF TRANSPARENT MINERAL MATERIAL. |
-
0
- IT IT454428D patent/IT454428A/it unknown
-
1949
- 1949-04-21 FR FR984895D patent/FR984895A/en not_active Expired
- 1949-05-17 DE DEP42929A patent/DE806532C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE806532C (en) | 1951-06-14 |
| FR984895A (en) | 1951-07-11 |