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Patent US2424647A successfully refreshed from Google Patents.
US2424647A
Expired / Lapsed
US
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Antiskid device
Assignee: Individual
•
Filing: 1943-05-27
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Granted: 1947-07-29
•
Expires: 1963-05-27
Abstract
No abstract record available.
Inventors
- 👤 Bernkull Oscar Harald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:55
CPC Classifications
B; B60; B60C; B60C27/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR321742A
Cited
US815430A
Cited
US792673A
Cited
US849729A
Cited
GB190603913A
Cited
GB190705716A
Cited
US1092419A
Cited
US1230508A
Cited
US1335460A
Cited
FR596857A
Cited
FR661047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-28 | 1951-01-27 | 1951-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-28 | 1955-01-27 | 1955-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-28 | 1959-01-27 | 1959-07-29 | $7700.00 | Window Closed / Lapsed |