FR419274A - Tubular flask level with reflector system - Google Patents
Tubular flask level with reflector systemInfo
- Publication number
- FR419274A FR419274A FR419274DA FR419274A FR 419274 A FR419274 A FR 419274A FR 419274D A FR419274D A FR 419274DA FR 419274 A FR419274 A FR 419274A
- Authority
- FR
- France
- Prior art keywords
- reflector system
- flask level
- tubular flask
- tubular
- level
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
- G01C9/26—Details
- G01C9/32—Means for facilitating the observation of the position of the bubble, e.g. illuminating means
-
- 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
- H01H33/02—Details
- H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Discharge Heating (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE419274X | 1933-07-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR419274A true FR419274A (en) | 1910-12-30 |
Family
ID=6448962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR419274D Expired FR419274A (en) | 1909-08-05 | 1910-07-29 | Tubular flask level with reflector system |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR419274A (en) |
GB (1) | GB419274A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE767767C (en) * | 1937-04-06 | 1953-05-18 | Automatic Telephone & Elect | Spark extinguishing arrangement for telecommunications, especially telephone systems |
BE450313A (en) * | 1942-04-25 |
-
1910
- 1910-07-29 FR FR419274D patent/FR419274A/en not_active Expired
-
1934
- 1934-07-09 GB GB20122/34A patent/GB419274A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB419274A (en) | 1934-11-08 |
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