Patent US2685293A successfully refreshed from Google Patents.
US2685293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cleaning tube bundles
Assignee: Standard Oil Development Co
•
Filing: 1948-12-31
•
Granted: 1954-08-03
•
Expires: 1968-12-31
Abstract
No abstract record available.
Inventors
- 👤 Dauphinee Enna Elm
- 👤 Antenbring Stanley Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:32
CPC Classifications
B; B24; B24C; B24C3/00; B24C3/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US445197A
Cited
US457317A
Cited
US561714A
Cited
US1403999A
Cited
US1928621A
Cited
CH145431A
Cited
US1952848A
Cited
US2040715A
Cited
US2200587A
Cited
US2258562A
Cited
US2225946A
Cited
US2289967A
Cited
US2395160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |