US2914870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1957-11-08
•
Granted: 1959-12-01
•
Expires: 1977-11-08
Abstract
No abstract record available.
Inventors
- 👤 Parfett John Allison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:02
CPC Classifications
G; G09; G09F; G09F5/00; G09F5/04; G09F11/00; G09F11/30; G09F11/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US180183A
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US243772A
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US259045A
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US359670A
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US499442A
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US782576A
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US1275259A
Cited
US1899861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-30 | 1963-06-01 | 1963-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-30 | 1967-06-01 | 1967-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-30 | 1971-06-01 | 1971-12-01 | $7700.00 | Window Closed / Lapsed |