US2841089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Rand Development Corp
•
Filing: 1953-05-29
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Granted: 1958-07-01
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Expires: 1973-05-29
Abstract
No abstract record available.
Inventors
- 👤 Jones John Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:57
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/02; F04C2/025; B; B63; B63H; B63H3/00; B63H3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US801182A
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US1376291A
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GB220296A
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GB367086A
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FR813559A
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GB486192A
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FR825643A
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FR48616E
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US2494100A
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US2475247A
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US2462063A
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US2449974A
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US2764101A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |