US2573318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Changeable sign
Assignee: Individual
•
Filing: 1948-06-15
•
Granted: 1951-10-30
•
Expires: 1968-06-15
Abstract
No abstract record available.
Inventors
- 👤 Dow John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
G; G09; G09F; G09F15/00; G09F15/0006; G09F15/0025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2355518A
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US956240A
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US993984A
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US1613033A
Cited
US1535408A
Cited
US2189567A
Cited
US2212313A
Cited
US2461400A
Cited
US2457883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |