US2217327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing well screens
Assignee: Individual
•
Filing: 1938-09-17
•
Granted: 1940-10-08
•
Expires: 1958-09-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Gustav A Zeidler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:36
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/08; E21B43/086; Y; Y10; Y10S; Y10S403/00; Y10S403/02; Y10T; Y10T29/00; Y10T29/49; Y10T29/496
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) | 1943-10-08 | 1944-04-08 | 1944-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-08 | 1948-04-08 | 1948-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-08 | 1952-04-08 | 1952-10-08 | $7700.00 | Window Closed / Lapsed |