Patent US3004381A successfully refreshed from Google Patents.
US3004381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical system
Assignee: Individual
•
Filing: 1956-04-06
•
Granted: 1961-10-17
•
Expires: 1976-04-06
Abstract
No abstract record available.
Inventors
- 👤 Jr Edmund O Schweitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:37
CPC Classifications
G; G04; G04C; G04C13/00; G04C13/02; G04C13/027
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2005158A
Cited
US1946098A
Cited
US2236374A
Cited
US2402973A
Cited
US2323566A
Cited
US2437558A
Cited
US2404238A
Cited
US2562682A
Cited
US2542627A
Cited
US2582957A
Cited
US2648832A
Cited
US2526425A
Cited
US2609535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |