File:David Rowland disposable safety ashtray.jpg
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Size of this preview: 800 × 520 pixels. Other resolutions: 320 × 208 pixels | 640 × 416 pixels | 1,024 × 666 pixels | 1,280 × 832 pixels | 2,073 × 1,348 pixels.
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Summary[edit]
| Description |
English: David Rowland disposable safety ashtray |
| Date | |
| Source | US patent 3683938, David L. Rowland, "ASH TRAY", granted 1972-08-15 |
| Author | David Rowland |
Licensing[edit]
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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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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:42, 11 November 2017 | | 2,073 × 1,348 (1.08 MB) | Sky views (talk | contribs) | User created page with UploadWizard |
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