* 1949: Atomic clocks * 1949: Radiocarbon dating: Willard Libby * 1949: Kei car in Japan Source: Wikipedia - Timeline of Historic Inventions.

* The Pager was invented by Alfred J. Gross in 1949. Sourch: Wikipedia - Canadian Inventions.

yes

the timeline, the clock, the book, the alphabet, the pi, the rabbits, the plauge, the mosaic, the alarm clock and the toothbrush

he had three patented inventions. The Improvement in Adjustable and Detachable Straps for Garments, which was suppose to replace suspenders. The Self pasting scrapbook that had adhesive already on it. and the Mark Twain memory builder, which was a game to help remember historic facts.

Technology timelines are commonly used to show how far the human race has advanced in creating inventions. PBS and Wikipedia are two useful websites to try first.