Patent US2892012A successfully refreshed from Google Patents.
US2892012A
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Electric bus duct apparatus
Assignee: General Electric Co
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Filing: 1954-09-28
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Granted: 1959-06-23
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Expires: 1974-09-28
Abstract
No abstract record available.
Inventors
- 👤 Swerdlow Nathan
- 👤 Walter R Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:56
CPC Classifications
H; H02; H02G; H02G5/00; H02G5/06; H02G5/066; H01; H01R; H01R35/00; H01R35/02
Claims Analysis
Total Claims: 0
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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) | 1962-06-22 | 1962-12-22 | 1963-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-22 | 1966-12-22 | 1967-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-22 | 1970-12-22 | 1971-06-23 | $7700.00 | Window Closed / Lapsed |