Hammer invented the bulb in 1976, he said, and primarily worked alone.
Although executives at GE liked the idea, they decided not to market it at the time. CFLs would require entirely new manufacturing facilities, which would cost $25 million. "So they decided to shelve it," Hammer said.
The electronics giant contemplated licensing the design. Unfortunately, the design leaked out. Others copied it before GE started a licensing program. Read full