PL70816B1 - - Google Patents
Info
- Publication number
- PL70816B1 PL70816B1 PL14791771A PL14791771A PL70816B1 PL 70816 B1 PL70816 B1 PL 70816B1 PL 14791771 A PL14791771 A PL 14791771A PL 14791771 A PL14791771 A PL 14791771A PL 70816 B1 PL70816 B1 PL 70816B1
- Authority
- PL
- Poland
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
- G01N21/45—Refractivity; Phase-affecting properties, e.g. optical path length using interferometric methods; using Schlieren methods
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL14791771A PL70816B1 (en) | 1971-05-03 | 1971-05-03 | |
| DE19722216395 DE2216395A1 (en) | 1971-05-03 | 1972-04-05 | DEVICE FOR THE AUTOMATIC SIGNALING OF THE METHAL CONTENT IN THE AIR |
| FR7212980A FR2135161B1 (en) | 1971-05-03 | 1972-04-13 | |
| GB1752572A GB1384320A (en) | 1971-05-03 | 1972-04-17 | Apparatus for automatic monitoring of presence fo the methane in air |
| DD16266972A DD97303A5 (en) | 1971-05-03 | 1972-05-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL14791771A PL70816B1 (en) | 1971-05-03 | 1971-05-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL70816B1 true PL70816B1 (en) | 1974-04-30 |
Family
ID=19954251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL14791771A PL70816B1 (en) | 1971-05-03 | 1971-05-03 |
Country Status (5)
| Country | Link |
|---|---|
| DD (1) | DD97303A5 (en) |
| DE (1) | DE2216395A1 (en) |
| FR (1) | FR2135161B1 (en) |
| GB (1) | GB1384320A (en) |
| PL (1) | PL70816B1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0073111B1 (en) * | 1981-08-20 | 1985-07-17 | Kidde-Graviner Limited | Improvements in and relating to fire and explosion detection and suppression |
| CN102998286B (en) * | 2012-12-20 | 2014-10-15 | 重庆一心仪器仪表有限公司 | Method for detecting concentration of methane by means of light interference |
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1971
- 1971-05-03 PL PL14791771A patent/PL70816B1/xx unknown
-
1972
- 1972-04-05 DE DE19722216395 patent/DE2216395A1/en active Pending
- 1972-04-13 FR FR7212980A patent/FR2135161B1/fr not_active Expired
- 1972-04-17 GB GB1752572A patent/GB1384320A/en not_active Expired
- 1972-05-02 DD DD16266972A patent/DD97303A5/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2135161A1 (en) | 1972-12-15 |
| GB1384320A (en) | 1975-02-19 |
| DE2216395A1 (en) | 1973-03-15 |
| FR2135161B1 (en) | 1974-07-26 |
| DD97303A5 (en) | 1973-04-20 |