Patent US5630507A successfully refreshed from Google Patents.
Patent US3068389A successfully refreshed from Google Patents.
US3068389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor construction
Assignee: Individual
•
Filing: 1958-10-03
•
Granted: 1962-12-11
•
Expires: 1978-10-03
Abstract
No abstract record available.
Inventors
- 👤 Charles R Cantonwine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:44
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/04; H02P; H02P1/00; H02P1/16; H02P1/42
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) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |