Patent US2802290A successfully refreshed from Google Patents.
US2802290A
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Assignee: Individual
•
Filing: 1954-12-20
•
Granted: 1957-08-13
•
Expires: 1974-12-20
Abstract
No abstract record available.
Inventors
- 👤 Walter E Carey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:34
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/037
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1489147A
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US1475958A
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US1564964A
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US1688824A
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US1804453A
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US1776470A
Cited
GB364022A
Cited
US1867997A
Cited
US2202925A
Cited
US2316815A
Cited
US2563350A
Cited
FR971596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |