US3277347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric circuit panelboard
Assignee: 3M Co
•
Filing: 1964-05-18
•
Granted: 1966-10-04
•
Expires: 1984-05-18
Abstract
No abstract record available.
Inventors
- 👤 Howard W Ecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:53
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/038; H05K7/00; H05K7/02; H05K7/06; H05K2201/00; H05K2201/02; H05K2201/0275; H05K2201/0281; H05K2201/029; H05K2201/10; H05K2201/10227; H05K2201/10287; H05K2201/10613; H05K2201/10954; H05K2201/10977
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |