Patent US2512940A successfully refreshed from Google Patents.
US2512940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for attaching master sheets on drums
Assignee: AB Dick Co
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Filing: 1945-03-17
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Granted: 1950-06-27
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Expires: 1965-03-17
Abstract
No abstract record available.
Inventors
- 👤 Edward J Janke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:51
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/181; H03F3/183; B; B41; B41L; B41L13/00; B41L13/04; B41L13/08; B41L13/10; H03F3/04; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 0
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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) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |