http://xpatents.historicip.com/ 2026-04-06T14:44:00+00:00 http://xpatents.historicip.com/ http://xpatents.historicip.com/_media/wiki/dokuwiki.svg text/html 2026-01-27T14:07:29+00:00 jeffj (jeffj@undisclosed.example.com) http://xpatents.historicip.com/nx-patents/info?rev=1769522849&do=diff Early American "NX" Patents The United States of America began issuing patents in 1790. Over the next 46 years, somewhere between 9000 and 1000 patents were issued. These early patents were not numbered. In 1836 new patent legislation was passed that, among other things, established a process of numbering newly issued patents. A short time later, the already-issued patents were retroactively numbered and this series of pre-July-1836 patents are now known as X patents. This process was complicat… text/html 2026-01-25T16:14:20+00:00 jeffj (jeffj@undisclosed.example.com) http://xpatents.historicip.com/xc-patents/info?rev=1769357660&do=diff Early Canadian Patents The earliest Canada patents were issued beginning in June 1824 after the Province of Lower Canada—what is now the more populated portion of the Province of Quebec—passed patent legislation in March and a Patent Office was established in June. These patents were for 14 years, and that length of term was maintained until 1869 when the patent legislation was complete rewritten. In 1826 the Province of Upper Canada—what is now the more populated portion of the Province of Ont… text/html 2026-01-25T16:11:02+00:00 jeffj (jeffj@undisclosed.example.com) http://xpatents.historicip.com/sidebar?rev=1769357462&do=diff X Patents * Introduction * Google Map * Location Search * Prolific Locations * Imprecise Locations * List Fractional X Patents * Information * List Reissued X Patents * Information * List NX Patents * Information * List Early Canadian Patents * Information * List text/html 2023-05-13T13:23:47+00:00 jeffj (jeffj@undisclosed.example.com) http://xpatents.historicip.com/x-patents/x-163?rev=1683984227&do=diff Patent X-163: 1797-04-13, Boring pumps X Number Date Inventor City Title Status X-163 1797-04-13 Caleb Leach Unknown, MA Boring pumps Missing Comments The Patent Office's original drawing and specification for this patent were lost in their December 1836 fire. The Massachusetts Historical Society has the inventor's copy of the original specification in their files, and we arranged to have those scanned and made available to us. text/html 2021-05-13T17:55:25+00:00 jeffj (jeffj@undisclosed.example.com) http://xpatents.historicip.com/x-patents/index?rev=1620928525&do=diff text/html 2020-02-13T17:13:24+00:00 jeffj (jeffj@undisclosed.example.com) http://xpatents.historicip.com/x-patents/x-4724?rev=1581614004&do=diff Patent X-4724: 1827-03-30, Manufacturing shingles X Number Date Inventor City Title Status X-4724 1827-03-30 Paul Hawes Lockport, NY Manufacturing shingles Recovered Comments Most of the patents prior to 1836 were lost in the Dec. 1836 fire. Only about 2,000 of the almost 10,000 documents were recovered. Little is known about this patent. Only the patent drawing is available. This patent is in the database for reference only. text/html 2019-05-30T01:03:31+00:00 russ (russ@undisclosed.example.com) http://xpatents.historicip.com/xc-patents/index?rev=1559178211&do=diff text/html 2019-05-30T01:02:23+00:00 russ (russ@undisclosed.example.com) http://xpatents.historicip.com/nx-patents/index?rev=1559178143&do=diff text/html 2019-05-30T01:01:28+00:00 russ (russ@undisclosed.example.com) http://xpatents.historicip.com/rx-patents/index?rev=1559178088&do=diff text/html 2019-05-30T01:00:19+00:00 russ (russ@undisclosed.example.com) http://xpatents.historicip.com/fx-patents/index?rev=1559178019&do=diff text/html 2019-05-28T02:48:17+00:00 russ (russ@undisclosed.example.com) http://xpatents.historicip.com/playground/playground3?rev=1559011697&do=diff <filelister=“fxlist.php”>