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Patent US2544774A successfully refreshed from Google Patents.
US2544774A
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Nonskid and auxiliary traction device
Assignee: Individual
•
Filing: 1947-09-12
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Granted: 1951-03-13
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Expires: 1967-09-12
Abstract
No abstract record available.
Inventors
- 👤 George F Bredl
- 👤 Michael M Bredl
- 👤 Wenzl F Bredl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:18
CPC Classifications
B; B62; B62D; B62D49/00; B62D49/06; B62D49/0621; B62D49/0635
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US938557A
Cited
US1153791A
Cited
US1424688A
Cited
US1636997A
Cited
US2002518A
Cited
US2275079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |