FR552806A - - Google Patents
Info
- Publication number
- FR552806A FR552806A FR552806DA FR552806A FR 552806 A FR552806 A FR 552806A FR 552806D A FR552806D A FR 552806DA FR 552806 A FR552806 A FR 552806A
- Authority
- FR
- France
- 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
- 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
- B24B13/06—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses, the tool or work being controlled by information-carrying means, e.g. patterns, punched tapes, magnetic tapes
- B24B13/065—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses, the tool or work being controlled by information-carrying means, e.g. patterns, punched tapes, magnetic tapes using a template
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1188521A GB183571A (en) | 1921-04-25 | 1921-04-25 | Improvements in machines for grinding and polishing bi-focal lenses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR552806A true FR552806A (en) | 1923-05-08 |
Family
ID=9994456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR552806D Expired FR552806A (en) | 1921-04-25 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR552806A (en) |
| GB (1) | GB183571A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1233568A (en) * | 1959-04-07 | 1960-10-12 | Comm Ouvriers Lunetiers Soc In | Sweetening machine |
-
0
- FR FR552806D patent/FR552806A/fr not_active Expired
-
1921
- 1921-04-25 GB GB1188521A patent/GB183571A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB183571A (en) | 1922-07-25 |