Patent US3386723A successfully refreshed from Google Patents.
US3386723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum degasser conduit
Assignee: Dresser Industries Inc
•
Filing: 1965-09-10
•
Granted: 1968-06-04
•
Expires: 1985-09-10
Abstract
No abstract record available.
Inventors
- 👤 Eldon D Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:21
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/10; F; F27; F27D; F27D1/00; F27D1/0003; F27D1/0006
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2569430A
Cited
US3067050A
Cited
US3135616A
Cited
US3054155A
Cited
US3246889A
Cited
US3264123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |