US3457751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheave forming machine
Assignee: NORTHWEST EQUIPMENT Co
•
Filing: 1967-01-09
•
Granted: 1969-07-29
•
Expires: 1987-01-09
Abstract
No abstract record available.
Inventors
- 👤 Jesse G Lindeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:08
CPC Classifications
B; B21; B21D; B21D15/00; B21D15/04; B21D15/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1486975A
Cited
US1856151A
Cited
US1968124A
Cited
US2495533A
Cited
US2750985A
Cited
US3349599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |