Patent US3452433A successfully refreshed from Google Patents.
US3452433A
Expired / Lapsed
US
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Method of manufacturing electrical conductor bars for trolley electrification systems
Assignee: Insul 8 Corp
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Filing: 1965-09-29
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Granted: 1969-07-01
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Expires: 1985-09-29
Abstract
No abstract record available.
Inventors
- 👤 Donald H Scofield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:03
CPC Classifications
B; B60; B60M; B60M1/00; B60M1/12; B60M1/13; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204; Y10T29/49208; Y10T29/49218; Y10T29/49826; Y10T29/49908; Y10T29/49924; Y10T428/00; Y10T428/12; Y10T428/12292; Y10T428/12306; Y10T428/12313; Y10T428/12319; Y10T428/12486
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE542432C
Cited
US1651792A
Cited
US1923738A
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US2158656A
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US2164267A
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US2311138A
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US2618845A
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US2969826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |