References 365% CONFIDENCEOverall confidence: 65%How well the pin's source and references back up its dates.Weighted average of how firmly 3 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins from 50% to 74% confidence
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]50%youtube.com/watch?v=UdZYM9TxSY8youtube.com· Posted Sep 15, 2026· Starts Jan 1, 1983 ✓· Ends Dec 31, 1983 ✓· 33% of score
TII Group’s[3] own "an invention turns 40" retrospective names 1983 as the year Scheuerle developed and launched the SPMT, but gives no specific day.
- [2]65%Self-propelled modular transporter - Wikipediaen.wikipedia.org· Added Sep 15, 2026· 33% of score
- [3]80%An invention turns 40 - TII Grouptii-group.com· Added Sep 15, 2026· 33% of score
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