US2781841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dignan
Assignee: —
•
Filing: —
•
Granted: 1957-02-19
•
Expires: 1974-02-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:39
CPC Classifications
B; B65; B65H; B65H35/00; B65H35/0006; B65H35/006; G; G07; G07B; G07B1/00; G07B3/00; G07B5/00; G07B5/02; G07C; G07C15/00; G07C15/005; G07F; G07F17/00; G07F17/42; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4516; Y10T83/4518; Y10T83/4597; Y10T83/4599
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) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |