Patent US4047844A successfully refreshed from Google Patents.
US3018367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed control system utilizing frequency change from inductive pickup
Assignee: Motors Liquidation Co
•
Filing: 1959-05-06
•
Granted: 1962-01-23
•
Expires: 1979-05-06
Abstract
No abstract record available.
Inventors
- 👤 Mountjoy Garrard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:04
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/02; G05D1/021; G05D1/0259; G05D1/0265
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2454659A
Cited
US1767609A
Cited
US2493755A
Cited
US2576424A
Cited
US2661070A
Cited
US2803743A
Cited
US2883975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |