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IV. Classified list of patents, &c.-Continued.

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Gum senegal, substitute for, (ante-
dated May 30, 1837.)
India rubber, manufacture of...
Leaching ashes..

Lead, carbonate of....

Lead, white.............

Marches, locofoco, dipping. Medicine, worm-destroying Oleagenous seeds, preparing for pressing.

Paint, composition.....

Paint, protection of buildings..
Paint, white, water-color...
Pills, tonic and aperient...
Paster, adhesive, spreading..
Preserving iron from rust.
Preserving timber and other vege-
table products.

Preserving timber from worms....
Salt water, purifying...

Soap, making...

Sugir, manufacturing.

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CLASS V-Calorific, comprising lamps, fireplaces, stoves, grates, furnaces for heating buildings, cooking apparatus, preparations of fuel, &c.

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IV.-Classified list of patents, &c.—Continued.

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CLASS VI.-Steam and gas engines, including boilers and furnaces

therefor, and parts thereof.

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IV.-Classified list of patents, &c.—Continued.

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CLASS VII.-Navigation and maritime implements, comprising all vessels for conveyance on water, their construction, rigging, and propulsion; diving dresses, life preservers, &c.

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IV. Classified list of patents, &c.—Continued.

CLASS VIII.-Mathematical, philosophical, and optical instruments, including clocks, chronometers, &c.

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CLASS IX.-Civil engineering and architecture, comprising works on rail and common roads, bridges, canals, wharves, docks, rivers, weirs, dams, and other internal improvements, buildings, roofs, &c.

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CLASS X.-Land conveyance, comprising carriages, cars, and other vehicles used on roads, and parts thereof.

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IV.-Classified list of patents, &c.—Continued.

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CLASS XI.-Hydraulics and pneumatics, including water-wheels, windmills, and other implements operated on by air or water, or employed in raising and delivery of fluids.

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