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Patents Grantslast 30 patents

Information Patent Grant
System of low-temperature low-humidity preservation storage and acc...
- Patent number 5,537,760
- Issue date Jul 23, 1996
- The United States of America as represented by the Librarian of Congress
- Donald K. Sebera
- F26 - DRYING
Information Patent Grant
Method of preserving and storing books and other papers
- Patent number 5,393,562
- Issue date Feb 28, 1995
- The United States of America as represented by the Librarian of Congress
- Donald K. Sebera
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of deacidifying paper
- Patent number 3,969,549
- Issue date Jul 13, 1976
- The United States of America as represented by the Librarian of Congress
- John C. Williams
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Composition for use in deacidification of paper
- Patent number 3,939,091
- Issue date Feb 17, 1976
- The United States of America as represented by the Librarian of Congress
- George B. Kelly
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

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