Patent US2997628A successfully refreshed from Google Patents.
US2997628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sequence bus panelboard
Assignee: Federal Pacific Electric Co
•
Filing: 1956-11-19
•
Granted: 1961-08-22
•
Expires: 1976-11-19
Abstract
No abstract record available.
Inventors
- 👤 John Michael J St
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:57
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/015; H02B1/04; H02B1/056
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1686289A
Cited
US2343178A
Cited
US2351942A
Cited
US2570229A
Cited
US2647225A
Cited
US2737613A
Cited
US2760123A
Cited
US2739272A
Cited
US2815396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |