DE262871C - - Google Patents
Info
- Publication number
- DE262871C DE262871C DE1912262871D DE262871DA DE262871C DE 262871 C DE262871 C DE 262871C DE 1912262871 D DE1912262871 D DE 1912262871D DE 262871D A DE262871D A DE 262871DA DE 262871 C DE262871 C DE 262871C
- Authority
- DE
- Germany
- Prior art keywords
- listener
- ear
- head
- roles
- always
- 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.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims 1
- 201000010099 disease Diseases 0.000 claims 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims 1
- 239000000645 desinfectant Substances 0.000 description 2
- 230000000249 desinfective effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US455182TA | 1912-02-06 | 1912-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE262871C true DE262871C (enrdf_load_stackoverflow) |
Family
ID=34359073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1912262871D Expired - Lifetime DE262871C (enrdf_load_stackoverflow) | 1912-02-06 | 1912-09-12 |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE262871C (enrdf_load_stackoverflow) |
| FR (1) | FR455135A (enrdf_load_stackoverflow) |
| GB (1) | GB191304502A (enrdf_load_stackoverflow) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3980842A (en) * | 1975-03-05 | 1976-09-14 | Weisbrich Alfred L | Telephone listening comfort adaptor (TLCA) |
-
1912
- 1912-09-12 DE DE1912262871D patent/DE262871C/de not_active Expired - Lifetime
-
1913
- 1913-02-21 GB GB191304502D patent/GB191304502A/en not_active Expired
- 1913-02-22 FR FR455135D patent/FR455135A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB191304502A (en) | 1913-10-16 |
| FR455135A (fr) | 1913-07-23 |
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