US2840630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bus duct
Assignee: Westinghouse Electric Corp
•
Filing: 1952-01-12
•
Granted: 1958-06-24
•
Expires: 1972-01-12
Abstract
No abstract record available.
Inventors
- 👤 William F Born
- 👤 James B Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:55
CPC Classifications
H; H02; H02G; H02G5/00; H02G5/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US799320A
Cited
US849975A
Cited
AT64099B
Cited
US1591940A
Cited
US1763682A
Cited
US1929700A
Cited
US2223300A
Cited
US2191071A
Cited
US2306353A
Cited
US2341311A
Cited
US2353763A
Cited
US2445424A
Cited
US2613896A
Cited
US2708686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |