Philip B. Downing Inventions - 搜索图片

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prezi.com
Philip B. Downing by LaKeisha Henley on Prezi
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thewestsidegazette.com
Philip Bell Downing - The Westside Gazette
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BlackPast.org
Philip B. Downing (1857-1934)
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swansnature.com
Who Was Philip B. Downing? – SwansNature

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sandraappiah
Philip Downing invented the modern-day letterbox - Face2Face Africa
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blogspot.com
T C C: Philip Downing Letter Box - U S Patent 462093 - Oct 27 1891
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theblackwallsttimes.com
Black Inventor Philip Downing is the reason fo…
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newhorizonacademy.net
Celebrating National Inventors' Day - New Horizon Academy

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540westmain.org
28 Days of Little Known Facts …
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blogspot.com
THROUGH ZENA'S EYES - BLACK HIS…
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Pinterest
Oct.27, 1891 a Black inventor named Phili…
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pinterest.co.uk
Philip B. Downing: Mail…
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youtube.com
Wednesday's Recap - Phillip B. Downing - American Inv…
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YouTube > WadiVibe
Philip B. Downing
YouTube · WadiVibe · 5645 次播放 · 2017年2月8日

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YouTube > Beta Lisolo
African American Inventor | Philip B Downing - Mailbox (Part 1)
YouTube · Beta Lisolo · 6067 次播放 · 2019年8月20日
4:54
youtube.com > NikkiTrue Topics
The Phillip B. Downing Story
YouTube · NikkiTrue Topics · 907 次播放 · 2022年6月24日
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youtube.com
#shorts We Did That! - Philip B Downing - YouTube
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YouTube > smash tv
African's first PHILIP B DOWNING
YouTube · smash tv · 612 次播放 · 2016年7月29日

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youtube.com > AGGRESSIVE INTELLIGENCE
Philip B. Downing - The Man Who Invented the Improved Mailbox and Secured FIVE US Patents!
YouTube · AGGRESSIVE INTELLIGENCE · 3561 次播放 · 2023年2月2日
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pinterest.com
Paul Downing | Vintage Noire …
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pinterest.com
Phillip B Downing inven…
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SlideServe
PPT - Black Inventors PowerPoint Presentation - ID:1779635
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Pinterest
Benjamin Franklin's Lightn…
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Pinterest
Pin on Black History / Blac…

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