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Summary
| Description |
English: Ming Kwai typewriter invented by Lin Yutang as it appears in the United States patent. Cropped image from the original. |
| Date | |
| Source | https://www.google.com/patents/US2613795 |
| Author | Campbell, Brumbaugh & Free |
Licensing
|
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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| 날짜/時間 | 섬네일 | 크기 | 使用者 | 說明 | |
|---|---|---|---|---|---|
| 現在 | 2014年10月8日（水）06時52分 | | 2,000 × 2,200 (180 KB) | wikimediacommons>Ceosad | User created page with UploadWizard |
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