Patent US2598930A successfully refreshed from Google Patents.
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 19:34
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US134150A
Cited
US226067A
Cited
US644748A
Cited
US729647A
Cited
US1069560A
Cited
US1169004A
Cited
US1474886A
Cited
US1508417A
Cited
US1643572A
Cited
US1776776A
Cited
US1996264A
Cited
US2048530A
Cited
US2108330A
Cited
US2203011A
Cited
US2158243A
Cited
US2261564A
Cited
US2261393A
Cited
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 |