共 50 条
- [23] THE NATURE OF PATENTABLE INVENTION JOURNAL OF THE PATENT OFFICE SOCIETY, 1946, 28 (06): : 456 - 456
- [25] IDENTIFICATION OF PATENTABLE INVENTIONS JOURNAL OF SCIENTIFIC & INDUSTRIAL RESEARCH, 1981, 40 (06): : 356 - 359
- [29] SERENDIPITY AND PATENTABLE INVENTION JOURNAL OF THE PATENT OFFICE SOCIETY, 1960, 42 (06): : 425 - 433