Patent US2781531A successfully refreshed from Google Patents.
US2781531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable finger gripping means in transfer mechanisms
Assignee: Waterbury Farrel Foundry and Machine Co
•
Filing: 1953-11-12
•
Granted: 1957-02-19
•
Expires: 1973-11-12
Abstract
No abstract record available.
Inventors
- 👤 Erwin B Byam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:26
CPC Classifications
B; B21; B21K; B21K27/00; B21K27/02; B21K27/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |