US2703518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subsoil tool
Assignee: Individual
•
Filing: 1953-10-27
•
Granted: 1955-03-08
•
Expires: 1973-10-27
Abstract
No abstract record available.
Inventors
- 👤 Whitmore John Lester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:46
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/30; E02F5/32; A; A01; A01B; A01B13/00; A01B13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US33877A
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US126077A
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US273697A
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US375892A
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US400351A
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US836007A
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US1290446A
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US1106186A
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US1136172A
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US1130655A
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US1159532A
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GB174629A
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FR518109A
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US1459393A
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US1514656A
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US2153038A
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US2236630A
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US2227670A
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US2269724A
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US2323460A
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US2341802A
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US2684617A
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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) | 1958-03-07 | 1958-09-06 | 1959-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-07 | 1962-09-06 | 1963-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-07 | 1966-09-06 | 1967-03-08 | $7700.00 | Window Closed / Lapsed |