US2598930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for removing seals from water wells and other purposes
Assignee: American Water Works Co Inc
•
Filing: 1947-12-02
•
Granted: 1952-06-03
•
Expires: 1967-12-02
Abstract
No abstract record available.
Inventors
- 👤 John B Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:27
CPC Classifications
E; E21; E21B; E21B29/00; E21B29/002; E21B29/005; E21B33/00; E21B33/10; E21B33/13; E21B33/134; E21B43/00; E21B43/02; E21B43/10; Y; Y10; Y10T; Y10T408/00; Y10T408/83; Y10T408/85
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |