IT454231A - - Google Patents
Info
- Publication number
- IT454231A IT454231A IT454231DA IT454231A IT 454231 A IT454231 A IT 454231A IT 454231D A IT454231D A IT 454231DA IT 454231 A IT454231 A IT 454231A
- 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
- B24B13/023—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 for grinding several lenses simultaneously
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR985293T | 1949-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT454231A true IT454231A (tr) |
Family
ID=9537287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT454231D IT454231A (tr) | 1949-04-28 |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE804761C (tr) |
| FR (1) | FR985293A (tr) |
| IT (1) | IT454231A (tr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1036696B (de) * | 1953-11-07 | 1958-08-14 | Zeiss Jena Veb Carl | Vorrichtung zum Herstellen von torischen Flaechen |
| US2779137A (en) * | 1954-09-21 | 1957-01-29 | Griscavage Frank Thomas | Mirror grinding machine |
| US2754638A (en) * | 1954-12-20 | 1956-07-17 | Robert E Duffens | Lens surfacing machine |
| DE1173360B (de) * | 1960-08-25 | 1964-07-02 | Philips Patentverwaltung | Schleif- bzw. Polierwerkzeug zur Bearbeitung von mit verschiedenen Radien gekruemmten Oberflaechen umlaufend gelagerter Glasgegenstaende |
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0
- IT IT454231D patent/IT454231A/it unknown
-
1949
- 1949-04-28 FR FR985293D patent/FR985293A/fr not_active Expired
-
1967
- 1967-09-02 DE DEP42927D patent/DE804761C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR985293A (fr) | 1951-07-17 |
| DE804761C (de) | 1951-03-01 |