Patent US2470051A successfully refreshed from Google Patents.
US2470051A
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Electrical impedance filament and the method of making same
Assignee: Baldwin Locomotive Works
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Filing: 1947-06-14
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Granted: 1949-05-10
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Expires: 1967-06-14
Abstract
No abstract record available.
Inventors
- 👤 Arthur C Ruge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:37
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/06; G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/2287; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/936; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12889; Y10T428/12944
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US10944A
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US1180614A
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US1273506A
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US1223322A
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US1441686A
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US2023603A
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US2318102A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |