FR351131A - Machine à graver, à agrandir, à réduire, etc. - Google Patents
Machine à graver, à agrandir, à réduire, etc.Info
- Publication number
- FR351131A FR351131A FR351131DA FR351131A FR 351131 A FR351131 A FR 351131A FR 351131D A FR351131D A FR 351131DA FR 351131 A FR351131 A FR 351131A
- Authority
- FR
- France
- Prior art keywords
- engraving
- enlarging
- reducing machine
- reducing
- machine
- 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
- B44—DECORATIVE ARTS
- B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
- B44B3/00—Artists' machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two-dimensionally for carving, engraving, or guilloching shallow ornamenting or markings
- B44B3/001—Artists' machines or apparatus equipped with tools or work holders moving or able to be controlled substantially two-dimensionally for carving, engraving, or guilloching shallow ornamenting or markings by copying
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/668—Means for obtaining or monitoring the vacuum
- H01H33/6683—Means for obtaining or monitoring the vacuum by gettering
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE351131X | 1929-04-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR351131A true FR351131A (fr) | 1905-07-04 |
Family
ID=6266611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR351131D Expired FR351131A (fr) | 1904-01-18 | 1905-01-18 | Machine à graver, à agrandir, à réduire, etc. |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR351131A (fr) |
| GB (1) | GB351131A (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3592987A (en) * | 1968-03-19 | 1971-07-13 | Westinghouse Electric Corp | Gettering arrangements for vacuum-type circuit interrupters comprising fibers of gettering material embedded in a matrix of material of good conductivity |
-
1905
- 1905-01-18 FR FR351131D patent/FR351131A/fr not_active Expired
-
1930
- 1930-04-08 GB GB11139/30A patent/GB351131A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB351131A (en) | 1931-06-25 |
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