<PAGE>
EXHIBIT 4.10
NOT VALID UNLESS COUNTERSIGNED BY TRANSFER AGENT
INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE
CUSIP NO. 030145 20 5
[NUMBER]
[SHARES]
[AMERICAN TECHNOLOGY CORPORATION LOGO]
AUTHORIZED COMMON STOCK: 50,000,000 SHARES
PAR VALUE: $.00001
[SPECIMEN]
THIS CERTIFIES THAT
IS THE RECORD HOLDER OF
-- fully paid and nonassessable shares of
AMERICAN TECHNOLOGY CORPORATION Common
Stock, par value $.00001 --
transferable on the books of the
Corporation in person or by duly authorized
attorney upon surrender of this Certificate
properly endorsed. This Certificate
is not valid until countersigned by the
Transfer Agent.
Witness the
facsimile seal of the Corporation and the facsimile signatures
of its duly authorized officers.
Dated:
Michael A. Russell
[facsimile signature]
Kalani Jones [facsimile signature]
-----------------------------
---------------------------------
SECRETARY
PRESIDENT
[AMERICAN TECHNOLOGY CORPORATION CORPORATE SEAL]
[Interwest Logo]
COUNTERSIGNED & REGISTERED
Interwest Transfer Co., Inc.
COUNTERSIGNED Transfer Agent-
P.O. Box 17136/ Salt Lake City, Utah 84117
Authorized Signature
<PAGE>
[Reverse Side of Certificate]
The within named Corporation will furnish
without charge to each stockholder who
so requests the powers, designations,
preferences and relative, participating,
optional, or other special rights of each
class of stock of the Cor
