ruary 15, 1926,
relating to such engines and is joint or sole owner of patents or patent
rights relating to said engines in England, Germany and Sweden.

2. Licensor agrees to furnish the Licensee at cost price but not
exceeding Thirty Dollars ($30.00) cash, as many pump and nozzle units as
are needed for use in building one or more experimental engines.

3. Licensor hereby gives and grants unto Licensee an exclusive license
for the manufacture, within the United States and its dependencies, and
a non-exclusive license for the use and sale, of engines for aircraft,
and a non-exclusive license for the manufacture, use, and sale of
engines for motor vehicles and motor boats, under said United States
patent Number 1,628,657, under all after-acquired patents and under all
patents that may result from said patent applications, and from all
other patent applications pertaining to his present oil burning engine
or reasonable variations thereof, such licenses to extend for the full
life and term of all such patents, provided however, that there is
specially excepted from this grant--stationary engines, tractor engines,
and engines for agricultural purposes.

4. Licensor further hereby permits said Licensee to export to all other
countries and sell and use there, without further royalty, all engines
made by Licensee in the United States under this license.

5. Licensor acknowledges receipt of One Thousand Dollars ($1,000.00) in
payment of a portion of the expenses heretofore incurred by him and as
one of the considerations for this agreement.

6. Licensor agrees to devote all time necessary from this date to
November 1, 1928 to supervision of the design of an engine and
construction thereof at the plant of the Licensee and will in his
absence furnish the services of a competent assistant, the expenses of
Licensor and assistant to be paid for by Licensee at the rate of One
Thousand Dollars ($1,000.00) per month for the first three (3) months,
and Five Hundred Dollars ($500.00) per month thereafter until the
decision in paragraph eight has been made by Licensee.

7. Licensee agrees to build and test at least one experimental aircraft
engine with special Dorner features, and to take all reasonable measures
to reach the stage of final test. All Dorner feature engines made by
Licensee will be marked "Licensed Under Dorner Patents."

8. Within one year after the completion of tests of the aircraft engine
built by Licensee hereu