JPS4948317A - - Google Patents
Info
- Publication number
- JPS4948317A JPS4948317A JP2499573A JP2499573A JPS4948317A JP S4948317 A JPS4948317 A JP S4948317A JP 2499573 A JP2499573 A JP 2499573A JP 2499573 A JP2499573 A JP 2499573A JP S4948317 A JPS4948317 A JP S4948317A
- Authority
- JP
- Japan
- 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.)
- Pending
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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK97572 | 1972-03-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4948317A true JPS4948317A (ja) | 1974-05-10 |
Family
ID=8099608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2499573A Pending JPS4948317A (ja) | 1972-03-02 | 1973-03-02 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS4948317A (ja) |
| DE (1) | DE2309141A1 (ja) |
| FR (1) | FR2174641A5 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS617230A (ja) * | 1984-06-20 | 1986-01-13 | Asahi Chem Ind Co Ltd | ４−（パラフルオロベンゾイル）−２，６−ジメチルフエノ−ル及びその製造方法 |
| US5220073A (en) * | 1989-10-30 | 1993-06-15 | Ocg Microelectronic Materials, Inc. | Selected trihydroxybenzophenone compounds |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2548095C2 (de) * | 1975-10-28 | 1985-05-09 | Manfred Dipl.-Ing. 7250 Leonberg Zippel | Lautsprechereinheit |
| SE447438B (sv) * | 1981-11-26 | 1986-11-10 | Stig Carlsson | Hogtalare |
-
1973
- 1973-02-23 DE DE19732309141 patent/DE2309141A1/de active Pending
- 1973-03-02 JP JP2499573A patent/JPS4948317A/ja active Pending
- 1973-03-02 FR FR7307549A patent/FR2174641A5/fr not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS617230A (ja) * | 1984-06-20 | 1986-01-13 | Asahi Chem Ind Co Ltd | ４−（パラフルオロベンゾイル）−２，６−ジメチルフエノ−ル及びその製造方法 |
| JPS6310140B2 (ja) * | 1984-06-20 | 1988-03-04 | Asahi Chemical Ind | |
| US5220073A (en) * | 1989-10-30 | 1993-06-15 | Ocg Microelectronic Materials, Inc. | Selected trihydroxybenzophenone compounds |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2174641A5 (ja) | 1973-10-12 |
| DE2309141A1 (de) | 1973-09-13 |