DS

David B. Spruill

PU Philip Morris Usa: 1 patents #332 of 607Top 55%
🗺 Virginia: #9,471 of 34,511 inventorsTop 30%
Overall (All Time): #1,665,267 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5037459 Device for controlling relative humidity within a substantially sealed container Joseph L. Banyasz, Thomas V. Van Auken 1991-08-06
5035731 Device for controlling relative humidity within a substantially sealed container Joseph L. Banyasz, Thomas V. Van Auken 1991-07-30
4687008 Filter cigarette Willie G. Houck, Jr., Francis M. Sprinkel, Reginald W. Newsome, Walter A. Nichols 1987-08-18