US3477884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of increasing the fatigue life of rolling contact elements and the resulting articles
Assignee: IHO Holding GmbH and Co KG
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Filing: 1967-07-17
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Granted: 1969-11-11
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Expires: 1987-07-17
Abstract
No abstract record available.
Inventors
- 👤 Hans Georg Schlicht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:05
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/36; C21D1/00; C21D1/06; C21D1/09; C21D1/10; C21D1/18; C21D9/40; F; F16; F16C; F16C33/00; F16C33/30; F16C33/58; F16C33/64; Y; Y02; Y02P; Y02P10/00; Y02P10/25; Y10; Y10S; Y10S148/00; Y10S148/902; Y10S148/906
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) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |