Patent US3495957A successfully refreshed from Google Patents.
US3495957A
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Lead-impregnated,iron-base,sinteredalloy materials for current-collecting slider shoes
Assignee: Mitsubishi Metal Corp
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Filing: 1967-12-28
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Granted: 1970-02-17
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Expires: 1987-12-28
Abstract
No abstract record available.
Inventors
- 👤 Toshio Matoba
- 👤 Akio Sakaba
- 👤 Hachiro Sato
- 👤 Tadashi Sato
- 👤 Tetsuro Yamaguchi
- 👤 Yuichi Saito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:26
CPC Classifications
B; B60; B60L; B60L5/00; B60L5/18; B60L5/20; C; C22; C22C; C22C33/00; C22C33/02; C22C33/0242; C22C33/0257; C22C33/0278; B60L2200/00; B60L2200/26; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216; Y10T428/12167
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2192792A
Cited
US2409307A
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US2456779A
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US2561579A
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US2758229A
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US3142559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |