US1858592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well screen
Assignee: EDWARD E JOHNSON Inc
•
Filing: 1929-04-01
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Granted: 1932-05-17
•
Expires: 1949-04-01
Abstract
No abstract record available.
Inventors
- 👤 Edward E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:59
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/08; E21B43/088; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/496; Y10T29/49602
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) | 1935-05-17 | 1935-11-16 | 1936-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-05-17 | 1939-11-16 | 1940-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-05-17 | 1943-11-16 | 1944-05-17 | $7700.00 | Window Closed / Lapsed |