Patent US3478222A successfully refreshed from Google Patents.
US3478222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control circuit
Assignee: LEE V GASSAWAY
•
Filing: 1967-05-22
•
Granted: 1969-11-11
•
Expires: 1987-05-22
Abstract
No abstract record available.
Inventors
- 👤 Lee V Gassaway
- 👤 Michael L Erdkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:23
CPC Classifications
A; A63; A63J; A63J17/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3189747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |