SCIENTIFIC AMERICAN. 239 TO CORRESPONDENTS. First Volume. HAT AND CAP MANUFACTURER AND DEALER. PATENT AGENCY AT WASHINGTON. curing Patents. RERS. FOR TUBULAR BOILERS, 1847-04-17

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SCIENTIFIC AMERICAN. 239 TO CORRESPONDENTS. First Volume. HAT AND CAP MANUFACTURER AND DEALER. PATENT AGENCY AT WASHINGTON. curing Patents. RERS. FOR TUBULAR BOILERS, 1847-04-17

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