Patent US1094020A successfully refreshed from Google Patents.
US1094020A
Expired / Lapsed
US
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Retaining member for well-packers.
Assignee: Individual
•
Filing: 1913-05-26
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Granted: 1914-04-21
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Expires: 1933-05-26
Abstract
No abstract record available.
Inventors
- 👤 Lawrence E Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:07
CPC Classifications
E; E21; E21B; E21B17/00; Y; Y10; Y10T; Y10T403/00; Y10T403/65; Y10T403/71; Y10T403/7123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1917-04-20 | 1917-10-20 | 1918-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1921-04-20 | 1921-10-20 | 1922-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1925-04-20 | 1925-10-20 | 1926-04-21 | $7700.00 | Window Closed / Lapsed |