Inventor

HEDDEN WALTER A

3 patents

⚠️ This page may combine multiple inventors who share the name “HEDDEN WALTER A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PMCMA RES GROUP

2 patents

US4148660AApr 10, 1979

Plaster molding composition

PMCMA RES GROUP13 citations69

US4081283AMar 28, 1978

Plaster molding composition

PMCMA RES GROUP14 citations69

EXXON PRODUCTION RESEARCH CO

1 patent

US4068718AJan 17, 1978

Hydraulic fracturing method using sintered bauxite propping agent

EXXON PRODUCTION RESEARCH CO366 citations94