NL182555B - PROCESS FOR THE MANUFACTURE OF ALŸ2OŸ3 AGGLOMERATES WITH HIGH MECHANICAL RESISTANCE. - Google Patents
PROCESS FOR THE MANUFACTURE OF ALŸ2OŸ3 AGGLOMERATES WITH HIGH MECHANICAL RESISTANCE.Info
- Publication number
- NL182555B NL182555B NLAANVRAGE7708198,B NL182555DB NL182555B NL 182555 B NL182555 B NL 182555B NL 182555D B NL182555D B NL 182555DB NL 182555 B NL182555 B NL 182555B
- Authority
- NL
- Netherlands
- Prior art keywords
- alÿ2oÿ3
- agglomerates
- manufacture
- high mechanical
- mechanical resistance
- Prior art date
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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/127—Non-planar diaphragms or cones dome-shaped
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/58—Anti-side-tone circuits
-
- 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
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
- H04R1/083—Special constructions of mouthpieces
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE321708X | 1952-11-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
NL182555B true NL182555B (en) |
Family
ID=6162943
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL86513D NL86513C (en) | 1952-11-07 | ||
NLAANVRAGE7708198,B NL182555B (en) | 1952-11-07 | PROCESS FOR THE MANUFACTURE OF ALŸ2OŸ3 AGGLOMERATES WITH HIGH MECHANICAL RESISTANCE. |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL86513D NL86513C (en) | 1952-11-07 |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE524124A (en) |
CH (1) | CH321708A (en) |
FR (1) | FR1086665A (en) |
NL (2) | NL182555B (en) |
-
0
- NL NL86513D patent/NL86513C/xx active
- BE BE524124D patent/BE524124A/xx unknown
- NL NLAANVRAGE7708198,B patent/NL182555B/en unknown
-
1953
- 1953-11-05 CH CH321708D patent/CH321708A/en unknown
- 1953-11-06 FR FR1086665D patent/FR1086665A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE524124A (en) | |
FR1086665A (en) | 1955-02-15 |
CH321708A (en) | 1957-05-15 |
NL86513C (en) |
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