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- [3] IS THE UNITED-STATES PATENT SYSTEM STRENGTHENING INDUSTRIAL RESEARCH & DEVELOPMENT, 1983, 25 (10): : 31 - 31
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- [7] WHITHER GOES UNITED-STATES PATENT SYSTEM JOURNAL OF THE PATENT OFFICE SOCIETY, 1966, 48 (01): : 42 - 68
- [9] THE UNITED-STATES PATENT SYSTEM - VAUGHAN,FL AMERICAN BAR ASSOCIATION JOURNAL, 1957, 43 (12): : 1122 - 1122