US2353988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for antifriction bearings
Assignee: NORMA HOFFMANN BEARINGS CORP
•
Filing: 1942-04-20
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Granted: 1944-07-18
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Expires: 1962-04-20
Abstract
No abstract record available.
Inventors
- 👤 Dwight E Batesole
- 👤 George H Kendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:29
CPC Classifications
F; F16; F16C; F16C23/00; F16C23/06; F16C23/08; F16C23/082; F16C23/086; F16C33/00; F16C33/72; F16C33/76; F16C33/78; F16C33/7803; F16C33/7806; F16C33/784; F16C33/7843; F16C33/7853; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36; F16C19/00; F16C19/02; F16C19/04; F16C19/06; F16C19/14; F16C19/18; F16C19/181; F16C19/183; Y; Y10; Y10S; Y10S277/00; Y10S277/916
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) | 1947-07-18 | 1948-01-17 | 1948-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-07-18 | 1952-01-17 | 1952-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-07-18 | 1956-01-17 | 1956-07-18 | $7700.00 | Window Closed / Lapsed |