US2836853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold for the manufacture of artificial thermoplastic bearing cages for antifriction bearings
Assignee: Duerkoppwerke GmbH
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Filing: 1954-03-29
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Granted: 1958-06-03
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Expires: 1974-03-29
Abstract
No abstract record available.
Inventors
- 👤 Altmann Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:13
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/30; F16C33/46; F16C33/56; B; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C45/2628; B29C45/40; B29C45/44; B29C45/4457; G; G11; G11B; G11B15/00; G11B15/70; B29L; B29L2031/00; B29L2031/04; F16C2220/00; F16C2220/02; F16C2220/04
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) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |