US2767650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article for correcting master sheets
Assignee: Individual
•
Filing: 1953-07-24
•
Granted: 1956-10-23
•
Expires: 1973-07-24
Abstract
No abstract record available.
Inventors
- 👤 Ellen M Yunker
- 👤 Charles L Yunker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:30
CPC Classifications
B; B41; B41L; B41L1/00; B41L1/20; B41L1/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A CORRECTION DEVICE IN THE FORM OF A BLOTTER WHICH IS IMPREGNATED WITH A COMPOSITION OF THE FOLLOWING FORMULA: 1 TO 3 PARTS OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM CARBONATE, TALC, FULLER''S EARTH, AND ZINC OXIDE; 1 PART OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ACACIA, GUM ARABIC, AND TRAGACANTH GUM; 1 TO 3 PARTS OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ZINC STEARATE AND CARBONATE OF LEAD; 1 PART OF SODIUM SILICATE; 1 PART OF GLYCERINE.
Claim 2
Dependent Claim
85 words
A CORRECTION DEVICE IN THE FORM OF A BLOTTER WHICH IS IMPREGNATED WITH A COMPOSITION OF THE FOLLOWING FORMULA: 1 TO 3 PARTS OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM CARBONATE, TALC, FULLER''S EARTH, AND ZINC OXIDE; 1 PART OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ACACIA, GUM ARABIC, AND TRAGACANTH GUM; 1 TO 3 PARTS OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ZINC STEARATE AND CARBONATE OF LEAD; 1 PART OF SODIUM SILICATE; 1 PART OF GLYCERINE.
References Cited (Backward Citations)
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Cited
US668565A
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US852191A
Cited
US1905118A
Cited
US2164035A
Cited
US2163934A
Cited
US2387643A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |