User Tools

Site Tools


X Patents

Fractional X Patents

Reissued X Patents

Early American Patents

Early Canadian Patents


Patent NX-5690: 1829-10-27, Basin or reservoir pump

X Number Date Inventor City Title
NX-5690 1829-10-27 John Brown Providence, RI Basin or reservoir pump


NX series patents are X-patents that do not have numbers. They have been arbitrarily assigned NX numbers to allow them to be entered into the Datamp file. We do not know whether they were actual patents as all that we have are the listings. They are entered here for reference and further research only.

Information Sources

(To be filled in.)

nx-patents/nx-5690.txt · Last modified: 2019/05/25 02:29 (external edit)