Patent US2671548A successfully refreshed from Google Patents.
US2671548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graph printing machine
Assignee: Individual
•
Filing: 1950-11-29
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Granted: 1954-03-09
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Expires: 1970-11-29
Abstract
No abstract record available.
Inventors
- 👤 Anderson Ralph Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:00
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/26; B41J29/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1227519A
Cited
US1118074A
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FR534442A
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US1712736A
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US1729630A
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US2278409A
Cited
US2165278A
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US2074754A
Cited
US2056391A
Cited
US2412777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |