FR659137A - Improvements to ammeters - Google Patents
Improvements to ammetersInfo
- Publication number
- FR659137A FR659137A FR659137DA FR659137A FR 659137 A FR659137 A FR 659137A FR 659137D A FR659137D A FR 659137DA FR 659137 A FR659137 A FR 659137A
- Authority
- FR
- France
- Prior art keywords
- ammeters
- 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
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/14—Indicating direction of current; Indicating polarity of voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R5/00—Instruments for converting a single current or a single voltage into a mechanical displacement
- G01R5/14—Moving-iron instruments
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnets (AREA)
- Measurement Of Current Or Voltage (AREA)
- Installation Of Indoor Wiring (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US214159A US1761908A (en) | 1927-08-19 | 1927-08-19 | Ammeter |
Publications (1)
Publication Number | Publication Date |
---|---|
FR659137A true FR659137A (en) | 1929-06-25 |
Family
ID=22797993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR659137D Expired FR659137A (en) | 1927-08-19 | 1928-08-18 | Improvements to ammeters |
Country Status (4)
Country | Link |
---|---|
US (1) | US1761908A (en) |
DE (1) | DE536173C (en) |
FR (1) | FR659137A (en) |
GB (1) | GB295714A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2460686A (en) * | 1944-01-04 | 1949-02-01 | Edison Inc Thomas A | Electrical instrument |
US2446431A (en) * | 1945-01-29 | 1948-08-03 | Paul Mood | Electrical measuring instrument |
US2926303A (en) * | 1956-02-20 | 1960-02-23 | Jesse D Staggs | Engine-speed indicating system |
-
1927
- 1927-08-19 US US214159A patent/US1761908A/en not_active Expired - Lifetime
-
1928
- 1928-08-02 GB GB22442/28A patent/GB295714A/en not_active Expired
- 1928-08-07 DE DEA54980D patent/DE536173C/en not_active Expired
- 1928-08-18 FR FR659137D patent/FR659137A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB295714A (en) | 1929-11-04 |
US1761908A (en) | 1930-06-03 |
DE536173C (en) | 1931-10-20 |
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