US2684539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shoe construction
Assignee: Individual
•
Filing: 1950-05-05
•
Granted: 1954-07-27
•
Expires: 1970-05-05
Abstract
No abstract record available.
Inventors
- 👤 Olaf G Beestrum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:05
CPC Classifications
A; A43; A43B; A43B9/00; A43B9/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2384431A
Cited
FR561599A
Cited
US1578345A
Cited
GB336298A
Cited
US2380146A
Cited
US2401089A
Cited
US2467386A
Cited
US2445847A
Cited
US2557535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-26 | 1958-01-25 | 1958-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-26 | 1962-01-25 | 1962-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-26 | 1966-01-25 | 1966-07-27 | $7700.00 | Window Closed / Lapsed |