Re: Mid 70's Equipment
I'm not sure what you're looking for: only human-portable objects? Only weapons?
In any event, here are a few bits and pieces; portable equipment, methods of transportation, new technology, and junk, culled from some printed sources I own. Almost all are brand new in the five years 1970-1974. If you cannot use them directly, they still will give you a sense of the times.
CB radios. (This needs to be checked; I'm depending on memory for this one)
Muscle cars and bellbottoms.
The Concorde SST (SuperSonic Transport)
Soft contact lenses
Major increase in mag-lev trains
BART
Oil tankers of 350,000 "ton" capacity and beyond.
FedEx.
Polaroid's "develop right then and there" color camera
The World Trade Center was opened in 1972. The Transamerica building in San Fransisco and the Sears Tower in Chicago are from about the same time.
ATMs became popular
The UPC came into use.
Airbus started to challenge Boeing's dominence, with the A300B
The CAT scan was invented
The Heimlich manuever was introduced
Word processors with CRTs began replacing typewriters
BTW: The patent on polyester ran out in 1970. Artificial fibers really took off afterwards. The only countering trend was the major increase in production and use of cotton denim, mostly blue.
Note also that satellite phones, and ham radio equipment, though not new, were available.