US3063875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and composition for cleaning tombstones
Assignee: Individual
•
Filing: 1959-02-24
•
Granted: 1962-11-13
•
Expires: 1979-02-24
Abstract
No abstract record available.
Inventors
- 👤 Miles E Barry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:25
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/046; C11D1/00; C11D1/66; C11D1/72; C11D3/042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A LIQUID FOR CLEANING TOMBSTONES IN THE PRESENCE OF VALUABLE VEGETATION WHICH CONSISTS ESSENTIALLY OF AN AQUEOUS MIXTURE OF ORTHOPHOSPHORIC ACID AND AMMONIUM BIFLUORIDE IN A RATIO OF ABOUT 1.25 TO 1.8 PARTS BY WEIGHT OF ORTHOPHOSPHORIC ACID TO 1 PART BY WEIGHT OF AMMONIUM BIFLUORIDE AND A SMALL QUANTITY OF WATERSOLUBLE NON-IONIC SURFACE ACTIVE AGENT SUFFICIENT TO PROVIDE AN HOMOGENEOUS AQUEOUS MIXTURE.
Claim 2
Dependent Claim
63 words
A LIQUID FOR CLEANING TOMBSTONES IN THE PRESENCE OF VALUABLE VEGETATION WHICH CONSISTS ESSENTIALLY OF AN AQUEOUS MIXTURE OF ORTHOPHOSPHORIC ACID AND AMMONIUM BIFLUORIDE IN A RATIO OF ABOUT 1.25 TO 1.8 PARTS BY WEIGHT OF ORTHOPHOSPHORIC ACID TO 1 PART BY WEIGHT OF AMMONIUM BIFLUORIDE AND A SMALL QUANTITY OF WATERSOLUBLE NON-IONIC SURFACE ACTIVE AGENT SUFFICIENT TO PROVIDE AN HOMOGENEOUS AQUEOUS MIXTURE.
References Cited (Backward Citations)
US208441A
Cited
US1949713A
Cited
US2257960A
Cited
US2316220A
Cited
US2316219A
Cited
US2529549A
Cited
US2672449A
Cited
US2687346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |