US2720801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling head
Assignee: Fette GmbH
•
Filing: 1951-12-19
•
Granted: 1955-10-18
•
Expires: 1971-12-19
Abstract
No abstract record available.
Inventors
- 👤 Erdelyi Ferenc
- 👤 Steenholdt Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:17
CPC Classifications
B; B21; B21H; B21H3/00; B21H3/02; B21H3/04; B21H3/042; B21H3/046; Y; Y10; Y10T; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/854; Y10T408/855
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US42849A
Cited
DE645529C
Cited
US885068A
Cited
US964272A
Cited
US1017888A
Cited
US1880742A
Cited
US1846296A
Cited
US2011761A
Cited
FR844080A
Cited
US2651224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |