Applications for Extension of Patents

Join Our Community of Science Lovers!


On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


ECCENTRIC EXPLOSIVE SHELLS.—Wm. W. Hubbell, of Philadelphia, Pa., hae applied for an extension of the abovepatent. Day ef htariiig Jan. S 1870. MACHINES FOR CUTTING FLOCKS AND PAPER STOCK—J. N. Pitts. Black" atone, Maes., hae applied for an extension oi the above patent. Day of hear* ing January 10,180. APPARATUS FOR HEATING BUILDINGS BY STEAM.—Stephen J. Gold.o1 West Cornwall, Conn., ha petitioned for an extension of the above patent-Day of hearing Jan. 12,1869. Facts for tlie Ladies. We have had onr Wheeler Wilson Sewing Machine for ten yeare; have made five hundred euite of heavy cloth upon it, quite a number of tents— which ie very heavy work—a quantity of family sewing, from the ilnest ma _ terial to the coareeet, and never epent a cent for repairs. I have seen a great many other machines, but would not now exchange mine for any other. Mise S. H. ALEXANDER. Newbern, Va.

Scientific American Magazine Vol 21 Issue 21This article was published with the title “Applications for Extension of Patents” in Scientific American Magazine Vol. 21 No. 21 (), p. 334
doi:10.1038/scientificamerican11201869-334

It’s Time to Stand Up for Science

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.

I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.

If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.

In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.

There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

Thank you,

David M. Ewalt, Editor in Chief, Scientific American

Subscribe