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The first all metal aircraft (Junkers J 1), was a big leap in technology because back then planes were made of cloth and metal structure or even wood. The Junkers J 1 was made in Germany by Hugo Junkers. The body was made of an Alloy(Combination of metals) made of Copper, Magnesium, and Maganese.

Source
HISTORY OF ALUMINUM IN THE AEROSPACE INDUSTRY. Metal Supermarkets. 2. 8. 2016

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The zeppelin was a Blimp but it had a metal frame so instead of pressurized gasses keeping its shape it held its own shape. It was invented by Ferdinand Graf von Zeppelin in 1900. Germans used these in WWI to bomb the enemies, and to moderate success, the main viability of these is that they could fly longer and higher that any airplane at the time.

Source
Britannica, The Editors of Encyclopaedia. "Zeppelin". Encyclopedia Britannica, 24 Aug. 2018,

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The Pathe Hand Ccrank Projecter is exactly what it soundds like. It is a projecter that has to be cranked to show an Image. Invented by the Pathe Brothers it is a step up from the other projecters at the time as it was able to use different film. That film was non flamable compared to the other film that was very flamable at the time. Which made quite the difference as these are cinema projecters and if the Cinema caught on fire that would be bad.

Source
Pathe Hand Crank 28MM Cinema Projector, Circa 1912 With Rare Vintage Film. Cinema Antiques.

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Zeppelins
Telephone
Projecter
Typewriter

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Typewriters are old pieces of technology they were typically used in place of programs like Google Docs which they didn't have back then. Typewriters can sell for a lot the record being $123,125. The first efficient typewiter was invented by Christopher Latham Sholes in 1867. Fun Fact, Mark Twain was the first author to submit a typwritten manuscript.

Source 1, Source 2
Britannica, The Editors of Encyclopaedia. "Typewriter". Encyclopedia Britannica, 13 Feb. 2018,

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The Telephone was Made by Alexander Graham Bell in 1876. and the word comes from the greek roots, tēle, “far,” and phonē, “sound,”. The design functionally hadn't been changed for about a century. The telephone was edited slightly by a few people the most recognizable being Thomas Edison.

Source
Borth, David E.. "Telephone". Encyclopedia Britannica, 7 May. 2021,