DE147136C - - Google Patents
Info
- Publication number
- DE147136C DE147136C DENDAT147136D DE147136DA DE147136C DE 147136 C DE147136 C DE 147136C DE NDAT147136 D DENDAT147136 D DE NDAT147136D DE 147136D A DE147136D A DE 147136DA DE 147136 C DE147136 C DE 147136C
- Authority
- DE
- Germany
- Prior art keywords
- microphone
- sound grooves
- sound
- telephone
- drums
- 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.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims 1
- 210000000056 organ Anatomy 0.000 claims 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical group CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/57—Arrangements for indicating or recording the number of the calling subscriber at the called subscriber's set
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE147136C true DE147136C (OSRAM) |
Family
ID=414344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT147136D Active DE147136C (OSRAM) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE147136C (OSRAM) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5156249A (en) * | 1990-05-31 | 1992-10-20 | Luk Lamellen Und Kupplungsbau Gmbh | Torque transmitting apparatus with axially deformable primary flywheel |
-
0
- DE DENDAT147136D patent/DE147136C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5156249A (en) * | 1990-05-31 | 1992-10-20 | Luk Lamellen Und Kupplungsbau Gmbh | Torque transmitting apparatus with axially deformable primary flywheel |
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