US2598121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil injector
Assignee: Shell Development Co
•
Filing: 1948-06-21
•
Granted: 1952-05-27
•
Expires: 1968-06-21
Abstract
No abstract record available.
Inventors
- 👤 Lester S Hanibal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:19
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/02; A01C23/023; A01C23/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US261558A
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US1004238A
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US1038084A
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US1002344A
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US1287930A
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US1661305A
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FR661045A
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FR36551E
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US2008891A
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US2285932A
Cited
US2322256A
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US2306339A
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US2424520A
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US2415251A
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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) | 1955-05-27 | 1955-11-26 | 1956-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-27 | 1959-11-26 | 1960-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-27 | 1963-11-26 | 1964-05-27 | $7700.00 | Window Closed / Lapsed |