Patent US2680608A successfully refreshed from Google Patents.
US2680608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fender for scarfing units
Assignee: Union Carbide Corp
•
Filing: 1951-11-30
•
Granted: 1954-06-08
•
Expires: 1971-11-30
Abstract
No abstract record available.
Inventors
- 👤 James H Bucknam
- 👤 Carl E Hartmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:00
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2184561A
Cited
US2282397A
Cited
US2309096A
Cited
US2317495A
Cited
US2470999A
Cited
US2532103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |