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| Description |
English: Patent US1651412 (pag.2) of The Porter Garden Telescope (refracting telescope version) by Russell W.Porter
Español: Patente US1651412 (pag.2) de The Porter Garden Telescope (version telescopio refractor) por Russell W.Porter |
| Date | |
| Source | http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=/netahtml/PTO/search-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN/1651412 |
| Author | Russell W. Porter |
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The text and illustrations of US patents published before March 1, 1989 are in the public domain unless the patent text contains a specific notice that portions are copyrighted. See 37 CFR 1.71(d), 37 CFR 1.84(s)
The original patent contains no such notice, so its contents are in the public domain. Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public domain for another reason, such as {{PD-ineligible}}. |
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| current | 21:42, 4 April 2018 | | 1,112 × 1,824 (496 KB) | Majozd (talk | contribs) | User created page with UploadWizard |
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