Patent US2680184A successfully refreshed from Google Patents.
US2680184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for severing or slitting metal foil
Assignee: Individual
•
Filing: 1951-02-07
•
Granted: 1954-06-01
•
Expires: 1971-02-07
Abstract
No abstract record available.
Inventors
- 👤 Duncan B Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:50
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1060757A
Cited
GB262272A
Cited
US1909079A
Cited
GB396934A
Cited
US2248057A
Cited
US2435441A
Cited
US2549966A
Cited
US2597511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |