USB354145I5
Hearing aid
Abstract
This record has no abstract on file.
Term
Term ended
Projected expiry passed 28 January 1992, 34.7 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| US2112569A | Cites | United States of America | Search report |
| US3385937A | Cites | United States of America | Search report |
| US3764745A | Cites | United States of America | Search report |
| US3784750A | Cites | United States of America | Search report |
2 priority claims, no other members on record
Priority claims2
| Document | Office | Kind | Date |
|---|---|---|---|
| 10346672 | Japan | A | |
| JP19720103466 | – | – | – |
Numbers
- Publication, DOCDB
- B354145
- Publication, EPODOC
- USB354145I
- Application
- 354145
- Application, DOCDB
- 35414573
- Application, EPODOC
- US19730354145
Classification
- CPC, 1
- H04R25/502
- IPC, 3
- H04R25 04
- H03G5 16
- H04R25 00