Tom Swift's Another Pocket?more Inventions

One thing all Tom Swift novels have in common is the lack of details about his lesser inventions. How did they come about? Were they part of something else of standalone projects? This series of four collections attempts to put the story behind the 'thingamy' as in, "Tom raced from the room pausing only long enough to cream the thin gamy into his jacket pocket knowing it might come in handy later on." Here is the second collection of tales of seven more of Tom's inventions, everything from his innovative fuel kicker that will get his into space as the first privately-funded astronaut to the creation of an incredible, life-saving ejection system for the military to an adventure on the Moon to devising an un-snoopable communications system, and a lot more.