| Patents -- Fiction. Matches 1 item |
| Patents -- History. Matches 1 item |
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Patents (Land grants) -- Kansas -- Riley County -- History -- 19th century. SEE: Land grants -- Kansas -- Riley County -- History -- 19th century. Matches 1 item
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Patents -- Law and legislation. SEE: Patent laws and legislation Matches 2 items
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| Patents -- Netherlands. Matches 1 item |
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Patents -- Searching. SEE: Patent searching Matches 1 item
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| Patents -- Social aspects. Matches 1 item |
| Patents -- Switzerland. Matches 1 item |
| Patents -- United States. Matches 2 items |
| Patents -- United States -- History -- 20th century. Matches 1 item |