Patent US3303389A successfully refreshed from Google Patents.
US3303389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overload protection circuit
Assignee: ZF International UK Ltd
•
Filing: 1963-01-24
•
Granted: 1967-02-07
•
Expires: 1983-01-24
Abstract
No abstract record available.
Inventors
- 👤 Jones Peter David
- 👤 Wright Maurice James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:30
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/78; H; H02; H02H; H02H3/00; H02H3/08; H02H3/087
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3206696A
Cited
US3210605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |