Hearing Aid
|
PAT. NO. |
Title |
| 603 |
4,634,815 |
In-the-ear hearing aid |
| 604 |
4,630,302 |
Hearing aid method and apparatus
|
| 605 |
4,629,833 |
Electric hearing aid |
| 606 |
4,628,907 |
Direct contact hearing aid apparatus
|
| 608 |
4,628,527 |
Mini hearing aid |
| 609 |
4,622,440 |
Differential hearing aid with programmable
frequency response |
| 610 |
4,617,429 |
Hearing aid |
| 611 |
4,612,915 |
Direct bone conduction hearing aid
device |
| 612 |
4,607,720 |
Hearing aid |
| 613 |
4,606,329 |
Implantable electromagnetic middle-ear
bone-conduction hearing aid device |
| 614 |
4,598,177 |
Hearing aid with self-contained
battery compartment and volume control |
| 615 |
4,596,902 |
Processor controlled ear responsive
hearing aid and method |
| 616 |
4,596,899 |
Telephone hearing aid |
| 617 |
4,592,087 |
Class D hearing aid amplifier |
| 618 |
4,585,089 |
Coupling element for a hearing aid
|
| 619 |
4,575,586 |
Apparatus for use in the adjustment
of the secondary adjustment means of a hearing aid |
| 620 |
4,574,912 |
Ear muff hearing aid |
| 621 |
4,569,812 |
Process for making a hearing aid
vent |
| 622 |
4,564,955 |
Coupling for use in the securing
of a hook-shaped sound part on a behind-the-ear hearing aid |
| 623 |
4,556,122 |
Ear acoustical hearing aid |
| 624 |
4,553,627 |
Hearing aid wax guard |
| 625 |
4,550,227 |
In-the-ear hearing aid |
| 626 |
4,543,453 |
Electronic hearing aid control circuit
|
| 627 |
4,539,441 |
Hearing-aid with integrated circuit
electronics |
| 628 |
4,539,440 |
In-canal hearing aid |
| 630 |
4,532,649 |
Hearing aid |
| 631 |
4,520,236 |
Sound transfer from a hearing aid
to the human ear drum |
| 632 |
4,509,022 |
Amplifier circuit with automatic
gain control and hearing aid equipped with such a circuit |
| 633 |
4,498,555 |
Hearing aid nubbin and acoustic
damper |
| 634 |
4,498,461 |
Coupling to a bone-anchored hearing
aid |
| 635 |
4,498,332 |
Test device for measuring the fit
of hearing aid related devices |
| 636 |
4,491,980 |
Hearing aid coupled with a radio
|
| 637 |
4,490,585 |
Hearing aid |
| 638 |
4,476,353 |
Hearing aid device to be worn in
the ear |
| 639 |
4,475,230 |
Hearing aid |
| 640 |
4,471,490 |
Hearing aid |
| 641 |
4,471,171 |
Digital hearing aid and method |
| 642 |
4,467,145 |
Hearing aid |
| 644 |
4,456,795 |
Behind-the-ear type hearing aid
|
| 645 |
4,449,018 |
Hearing aid |
| 646 |
4,447,677 |
Hearing aid |
| 647 |
4,440,982 |
Hearing aid |
| 648 |
4,421,199 |
Sound reflector type hearing aid
|
| 649 |
4,418,787 |
Hearing aid with audio path duct
extension element, and extension element attachment |
| 650 |
4,409,435 |
Hearing aid suitable for use under
noisy circumstance |
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