US2666002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contrasting colors for type matrices
Assignee: Individual
•
Filing: 1951-09-29
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Granted: 1954-01-12
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Expires: 1971-09-29
Abstract
No abstract record available.
Inventors
- 👤 Heinecke William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:05
CPC Classifications
—
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A METHOD FOR DARKENING THE BACKGROUND SURFACES OF BRASS TYPE MATRIX CHARACTERS COMPRISING ARRANGING A PLURALITY OF MATRICES SO THAT THE BACKGROUND SURFACES ALL LIE IN SUBSTANTIALLY A COMMON PLANE, THEN CLAMPING THE MATRICES TIGHTLY TOGETHER, DISPOSING A DRY RIBBON IMPREGNATED WITH AN ORGANIC COMPOUND CONTAINING THE
Claim 2
Dependent Claim
39 words
AN ARTICLE FOR USE IN DARKENING SELECTED BRASS MATRIX SURFACES COMPRISING A RIBBON OF WOVEN GLASS FIBERS IMPREGNATED WITH THIO-UREA, NITROCELLULOSE AS A BINDER TO ANCHOR THE THIO-UREA TO THE FIBER AND RICINUS OIL AS PLASTICIZER FOR THE NITROCELLULOSE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |