US3514989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for die forming flexures using edge constraint
Assignee: Schneider Electric Systems USA Inc
•
Filing: 1967-10-04
•
Granted: 1970-06-02
•
Expires: 1987-10-04
Abstract
No abstract record available.
Inventors
- 👤 Robert J Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:49
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/38; B21D53/40; B21K; B21K1/00; B21K1/76
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US667838A
Cited
US2292176A
Cited
US2611659A
Cited
US3304761A
Cited
GB1033233A
Cited
US3398444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |