Patent US2741980A successfully refreshed from Google Patents.
US2741980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
arcus
Assignee: —
•
Filing: —
•
Granted: 1956-04-17
•
Expires: 1973-04-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:25
CPC Classifications
B; B41; B41J; B41J9/00; B41J9/02; B41J9/10; G; G07; G07B; G07B1/00; G07B3/00; G07B5/00; G07B5/02; G07F; G07F17/00; G07F17/42; Y; Y10; Y10T; Y10T83/00; Y10T83/525; Y10T83/541; Y10T83/869; Y10T83/8742; Y10T83/8743
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2023130A
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US2084098A
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US2039600A
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US2111116A
Cited
US2281577A
Cited
US2233158A
Cited
US2306694A
Cited
US2267517A
Cited
US2371358A
Cited
US2346145A
Cited
US2620726A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |