US2440075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ankle joint and reinforcing member for pneumatic feet
Assignee: CAMPBELL EDWARDS PNEUMATIC ART
•
Filing: 1946-04-24
•
Granted: 1948-04-20
•
Expires: 1966-04-24
Abstract
No abstract record available.
Inventors
- 👤 Harry C Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:14
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/60; A61F2/66; A61F2/602; A61F2/6607; A61F2002/6614; A61F2002/6657; A61F2002/6671
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |