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US3059237A
Expired / Lapsed
US
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Chart recorder
Assignee: Shell USA Inc
•
Filing: 1959-05-11
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Granted: 1962-10-16
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Expires: 1979-05-11
Abstract
No abstract record available.
Inventors
- 👤 Robert H Kolb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:37
CPC Classifications
G; G06; G06M; G06M3/00; G06M3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2803815A
Cited
US1952991A
Cited
US2705105A
Cited
US2718634A
Cited
US2860832A
Cited
US2847268A
Cited
US2816709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |