Subjects: *ELECTRICITY; *INVENTIONS
Record details
Subjects: Inventions; Patents
Subjects: Patent applications; United States. Patent & Trademark Office; Inventions
Subjects: Inventions; Patent applications; United States. Patent & Trademark Office
Subjects: Inventions; Patents; Prototype design & construction
Subjects: Inventors; Inventions; Engineers
Subjects: Patents; Inventions; United States. Patent & Trademark Office
Subjects: Patent applications; Inventions; United States. Patent & Trademark Office
Subjects: Patentability; Inventions -- Law & legislation; Inventors
Subjects: Inventions; Patents; Royalties (Copyright)