Patent US2196732A successfully refreshed from Google Patents.
US2683045A
Expired / Lapsed
US
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Pipe hanger and seal assembly
Assignee: Cooper Industries LLC
•
Filing: 1950-03-30
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Granted: 1954-07-06
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Expires: 1970-03-30
Abstract
No abstract record available.
Inventors
- 👤 Robert C Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:37
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/0422; Y; Y10; Y10T; Y10T403/00; Y10T403/49
Claims Analysis
Total Claims: 0
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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) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |