US2906552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing and bearing device having low friction sealing faces
Assignee: Individual
•
Filing: 1955-11-04
•
Granted: 1959-09-29
•
Expires: 1975-11-04
Abstract
No abstract record available.
Inventors
- 👤 Charles S White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:55
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3284; F16J15/3288; D; D03; D03D; D03D25/00; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/20; F16C33/201; F16C33/28; F16J15/18; F16J15/20; Y; Y10; Y10S; Y10S285/00; Y10S285/909; Y10S285/918; Y10S384/00; Y10S384/90; Y10S384/911; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2130359A
Cited
US2248761A
Cited
US2264062A
Cited
US2480116A
Cited
US2450948A
Cited
US2542297A
Cited
US2723932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |