US2949992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-friction ball transfer
Assignee: Individual
•
Filing: 1955-02-07
•
Granted: 1960-08-23
•
Expires: 1975-02-07
Abstract
No abstract record available.
Inventors
- 👤 William J Weinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:37
CPC Classifications
B; B65; B65G; B65G13/00; B65G13/11; B65G13/12; B65G39/00; B65G39/02; B65G39/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US559552A
Cited
US1042336A
Cited
US1648301A
Cited
US1963956A
Cited
US2021503A
Cited
US2173298A
Cited
US2822073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |