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US2745686A
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Bearing seals
Assignee: NORMA HOFFMAN BEARINGS CORP
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Filing: 1952-09-23
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Granted: 1956-05-15
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Expires: 1972-09-23
Abstract
No abstract record available.
Inventors
- 👤 Warren D Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:44
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/78; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53104; Y10T29/53657
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1722489A
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US1991077A
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US1895167A
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US2110864A
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US2266407A
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US2574323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |