BE362471A - - Google Patents
Info
- Publication number
- BE362471A BE362471A BE362471DA BE362471A BE 362471 A BE362471 A BE 362471A BE 362471D A BE362471D A BE 362471DA BE 362471 A BE362471 A BE 362471A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/12—Sanitary or hygienic devices for mouthpieces or earpieces, e.g. for protecting against infection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR649156T | 1927-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE362471A true BE362471A (sr) |
Family
ID=9003155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE362471D BE362471A (sr) | 1927-07-09 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE362471A (sr) |
| FR (1) | FR649156A (sr) |
-
0
- BE BE362471D patent/BE362471A/xx unknown
-
1927
- 1927-07-09 FR FR649156D patent/FR649156A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR649156A (fr) | 1928-12-19 |