Patent US2980545A successfully refreshed from Google Patents.
US2980545A
Expired / Lapsed
US
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Water base stencil duplicating ink
Assignee: AB Dick Co
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Filing: 1957-10-29
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Granted: 1961-04-18
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Expires: 1977-10-29
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Shoemaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:20
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
10 words
A STABLE, AQUEOUS STENCIL DUPLICATING INK COMPOSITION CONSISTING ESSENTIALLY OF:
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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |