US2853323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic seal
Assignee: Caterpillar Inc
•
Filing: 1955-03-16
•
Granted: 1958-09-23
•
Expires: 1975-03-16
Abstract
No abstract record available.
Inventors
- 👤 Frederick S Engelking
- 👤 John P Jero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:31
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/74; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36; F16C2206/00; F16C2206/40; F16C2206/42; F16C2206/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2253969A
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US2571526A
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US2279167A
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US2391577A
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US2425209A
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US2480908A
Cited
US2650841A
Cited
US2602709A
Cited
US2770477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |