Patent US2082413A successfully refreshed from Google Patents.
US2082413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wellhead equipment
Assignee: Vetco Gray LLC
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Filing: 1935-06-15
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Granted: 1937-06-01
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Expires: 1955-06-15
Abstract
No abstract record available.
Inventors
- 👤 Robert A Mueller
- 👤 John R Yancey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:08
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04
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) | 1940-05-31 | 1940-11-30 | 1941-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-05-31 | 1944-11-30 | 1945-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-05-31 | 1948-11-30 | 1949-06-01 | $7700.00 | Window Closed / Lapsed |