US2880081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Honing stone and method of making
Assignee: Individual
•
Filing: 1953-09-03
•
Granted: 1959-03-31
•
Expires: 1973-09-03
Abstract
No abstract record available.
Inventors
- 👤 William R Eubank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:56
CPC Classifications
B; B24; B24D; B24D18/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
53 words
AN ARTIFICAL STONE-LIKE STRUCTURE HAVING HIGH STRENGHT AND A HIGH DEGREE OF UNIFORMITY AND BEING THE VITREOUS FIRED RESIDUE OF A PRESSURE-COMPACTED AND DRIED MASS OF A GRANULAR COHERENT MIXTURE OF COMPONETS CONSISTING ESSENTIALLY OF FINE ABRASIVE GRAIN, CONCENTRATED LIQUID AQUEOUS ALUMINUM DIHYDROGEN PHOSPHATE INORGANIC BINDER SOLUTION, POWDER GLASSY SILICATE, AND PLASTIC CLAY.
References Cited (Backward Citations)
US1987861A
Cited
US2000611A
Cited
US2356938A
Cited
US2527044A
Cited
US2559664A
Cited
US2541658A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-30 | 1962-09-29 | 1963-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-30 | 1966-09-29 | 1967-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-30 | 1970-09-29 | 1971-03-31 | $7700.00 | Window Closed / Lapsed |