Patent US2578523A successfully refreshed from Google Patents.
US2797801A
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Card of individually removable markers
Assignee: WESTERN LITHOGRAPH Co
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Filing: 1954-10-07
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Granted: 1957-07-02
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Expires: 1974-10-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Jerome H Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:57
CPC Classifications
D; D06; D06H; D06H1/00; D06H1/04; B; B42; B42F; B42F21/00; Y; Y10; Y10S; Y10S206/00; Y10S206/82; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1064; Y10T156/1082; Y10T428/00; Y10T428/14; Y10T428/1481
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2679928A
Cited
US2681732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |