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Old Jul 27, 2001, 03:48 PM
fisher is offline
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This patent will not affect you if you do not sell an airplane made using these methods and materials.
Patents only last 9 years(maybe 7?) anyway and are rarely extended.
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Old Jul 28, 2001, 05:30 AM
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Hello,

Radix2 - Thanks very much for that - an unusual and topical little twist . . .

Keven.

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Old Jul 28, 2001, 01:46 PM
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Mass produced coroplast lifting bodies...

nuff said
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Old May 30, 2015, 06:15 PM
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Patent? Expired

Anyone notice that the patent seems to have been abandoned.

http://www.google.com/patents/US5398893
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Old May 30, 2015, 07:16 PM
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Spad?
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Old May 30, 2015, 10:55 PM
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WAA-08 THANK FRANK!
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Show me where hobbico owns hi-tec.... I call B.S. on the premise of the whole post....
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Old May 31, 2015, 12:29 AM
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I heard it was being used by the balsa growers association to drive up the demand for balsa. I also heard the bga was behind the big foam factory fire in china.
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Old May 31, 2015, 01:33 AM
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supreme being of leisure
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Quote:
Originally Posted by JimNM View Post
Show me where hobbico owns hi-tec.... I call B.S. on the premise of the whole post....
he may have been wrong on hitec but everything else is spot on.

and if you want true patent office stupidity then apple's "rectangle with rounded corners" takes the cake.
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