Richard A. Landsman

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Hingham, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Spreadsheet program which implements alternative range references
- Patent number 5,371,675
- Issue date Dec 6, 1994
- Lotus Development Corporation
- Irene Greif
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Information management system
- Patent number 5,115,504
- Issue date May 19, 1992
- Lotus Development Corporation
- Edward J. Belove
- G06 - COMPUTING CALCULATING COUNTING