US2538318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copyholder
Assignee: Individual
•
Filing: 1950-01-25
•
Granted: 1951-01-16
•
Expires: 1970-01-25
Abstract
No abstract record available.
Inventors
- 👤 Elder E Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:02
CPC Classifications
G; G09; G09F; G09F1/00; G09F1/10; G09F1/14; B; B41; B41J; B41J29/00; B41J29/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US230750A
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US476353A
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US631512A
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US702018A
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US728646A
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CH98519A
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FR578415A
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US1915628A
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US2173379A
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US2414183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-15 | 1954-07-17 | 1955-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-15 | 1958-07-17 | 1959-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-15 | 1962-07-17 | 1963-01-16 | $7700.00 | Window Closed / Lapsed |