US2977164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller bearings having roller cages of synthetic material
Assignee: Duerkoppwerke GmbH
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Filing: 1959-10-26
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Granted: 1961-03-28
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Expires: 1979-10-26
Abstract
No abstract record available.
Inventors
- 👤 Witte Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:39
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/30; F16C33/46; F16C33/4605; F16C33/4617; F16C33/4641; F16C33/4652; F16C33/49; F16C33/491; F16C19/00; F16C19/22; F16C19/24; F16C19/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |