Edwin Thacher's 1881 Slide Rule Patent
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Description: Specification forming part of Letters Patent No. 249117, dated November 1, 1881. Includes diagrams.
Edwin Thacher's 1881 Slide Rule Patent EDWIN THACHER, OF PITTSBURG, PENNSYLVANIA SPECIFICATION forming part of Letters Patent No. 249117, dated November 1, 1881 Be it known that I, EDWIN THACHER of Pittsburg county of Allegheny State of Penn sylvania, have invented or discovered a new and useful Improvement in Slide-Rules; and 1 do hereby declare the following to be a full clear, concise, and exact description thereof, reference being had to the accompanying drawings making a part of this specification in which
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WEBSITE Info
| Page title: | Edwin Thacher's 1881 Slide Rule Patent |
| Keywords: | antique, slide rules, calculators, cylindrical slide rules |
| Description: | |
| IP-address: | 209.237.150.20 |
WHOIS Info
| NS | Name Server: A.NS.INTERLAND.NET Name Server: B.NS.INTERLAND.NET |
| WHOIS | Status: clientTransferProhibited |
| Date | Creation Date: 26-dec-1997 Expiration Date: 25-dec-2018 |