US2643723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil well tool
Assignee: Lynes Inc
•
Filing: 1947-12-11
•
Granted: 1953-06-30
•
Expires: 1967-12-11
Abstract
No abstract record available.
Inventors
- 👤 Lynes John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:44
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/124; E21B33/1243; E21B33/129; E21B33/1294
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1959660A
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US2143106A
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US2143251A
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US2222846A
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US2254060A
Cited
US2227729A
Cited
US2227730A
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US2227731A
Cited
US2390372A
Cited
US2611437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |