US2914078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas lift valve damper
Assignee: Camco Inc
•
Filing: 1955-01-20
•
Granted: 1959-11-24
•
Expires: 1975-01-20
Abstract
No abstract record available.
Inventors
- 👤 Jr Harold E Mcgowen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:04
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; E21B43/121; E21B43/122; E21B43/123; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/2934; Y10T137/7722; Y10T137/7837; Y10T137/785; Y10T137/7851
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US160869A
Cited
US1874135A
Cited
US2212600A
Cited
US2519242A
Cited
US2673568A
Cited
US2748792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |