US2552064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Footwear with integral gusset at bottom of opening
Assignee: Ro Search Inc
•
Filing: 1947-09-23
•
Granted: 1951-05-08
•
Expires: 1967-09-23
Abstract
No abstract record available.
Inventors
- 👤 Rollmann Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:55
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/0054; A; A43; A43B; A43B3/00; A43B3/16; B29D35/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1075930A
Cited
US1604954A
Cited
US1821471A
Cited
CH130138A
Cited
US1739821A
Cited
US2357360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |