US2746813A
Expired / Lapsed
US
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Means for reducing static friction
Assignee: Individual
•
Filing: 1951-11-16
•
Granted: 1956-05-22
•
Expires: 1971-11-16
Abstract
No abstract record available.
Inventors
- 👤 Massa Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:22
CPC Classifications
F; F16; F16C; F16C39/00; F16C29/00; F16C29/02; F16C32/00; F16C32/06; F16C32/0603; F16C32/0607; F16C32/0611; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/304536; Y10T74/00; Y10T74/12
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) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |