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Tesla Elecro-Magnet Motor Patent US381968 p 1-4 Postcard
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Signature Matte
18 pt thickness / 120 lb weight
Soft white, soft eggshell texture
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Tesla Elecro-Magnet Motor Patent US381968 p 1-4 Postcard
A rotating magnetic field is a magnetic field which periodically changes direction. This is a key principle to the operation of alternating-current motor. In 1882, Nikola Tesla identified the concept of the rotating magnetic field. In 1888, Tesla gained U.S. Patent 381968 for his work. These are the drawings. Pages 1-4; Released under the GNU Free Documentation License.
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By Heather D.20 September 2021 • Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
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It was exactly like the pic on Zazzle. Size was good to write on the back. Image was great. Lovely colours and clear
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By Dash K.23 January 2024 • Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
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I was pleased with the excellent quality of the calendar and the high quality of the card stock used. I will definitely order these postcards again. The printing was excellent. I was so pleased!
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By Lisa B.26 August 2019 • Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
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Such a huge range of different frogs available, which made my choices very difficult and now the reason I have a whole draw full of cards and postcards! Much better quality than you can buy in the shops and they are exactly on the subject I love and adore too.
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Product ID: 239381168550075252
Posted on 4/08/2014, 4:12 PM
Rating: G
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