US2778431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well packer reinforcing
Assignee: Lynes Inc
•
Filing: 1953-01-21
•
Granted: 1957-01-22
•
Expires: 1973-01-21
Abstract
No abstract record available.
Inventors
- 👤 Lynes John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:16
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/127; E21B33/1277
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US49544A
Cited
US232209A
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US820149A
Cited
US927874A
Cited
US1190790A
Cited
US2143106A
Cited
US2611437A
Cited
US2630864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |