Patent US3369934A successfully refreshed from Google Patents.
US3369934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing vanadium deposits from the fire side of heat transfer surfaces
Assignee: United States Department of the Navy
•
Filing: 1964-02-27
•
Granted: 1968-02-20
•
Expires: 1984-02-27
Abstract
No abstract record available.
Inventors
- 👤 Albert J Pollard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:57
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/08; C23G1/088
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CA515509A
Cited
US1954745A
Cited
US2326837A
Cited
US2653420A
Cited
US2631950A
Cited
US3173874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |