All Patents of Type: rules |
Patents 1 -
15
of 493
|
Number | Date | Patentee | Title | Type |
453X | May 17, 1803 | J.J. Hawkins | Pentegraph and parallel ruler | parallel rules |
500X | Nov. 30, 1803 | J. Fairbanks | Cylindric ruler for ruling paper | ruling machines |
866X | Apr. 29, 1808 | B. Dearborn | Combination Rule/Bevel | folding rules |
2,331X | Jun. 21, 1815 | L. Hedge, T.M. Pomroy | Spring Pen Ruler | rules |
2,746X | Mar. 03, 1817 | L. Hedge | Revolving ruler | rules |
6,998X | Apr. 14, 1832 | J. Carrington | Parallel ruler | rules |
7,591X | May 22, 1833 | D. Williams | Tailor's Measure | rules |
7,817X | Nov. 19, 1833 | B.J. Lewis | Tailor's Square and Measure | squares |
8,783X | Apr. 22, 1835 | L. Hedge | Carpenter's rule joint | folding rule joints |
9,110X | Sep. 18, 1835 | J.S. Rockefellow | Tailor's Measure | rules |
9,219X | Oct. 31, 1835 | F.A. Fairchild | Tailor's Measure | tape measures |
185 | Apr. 29, 1837 | L. Hedge | Double-Centered Joint for Rules | folding rule joints |
RX-11 | Aug. 31, 1839 | D. Williams | Improvement in the Art of Tailoring | rules |
2,907 | Jan. 10, 1843 | J.P. Smith | Merchant's Slide Rule | scales |
3,590 | May 17, 1844 | C. Ross | Revolving Board Rule | lumber rules |