US2851292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: United Engineering and Foundry Co
•
Filing: 1953-06-01
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Granted: 1958-09-09
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Expires: 1973-06-01
Abstract
No abstract record available.
Inventors
- 👤 Melvin A Mcclain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:11
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/02; F16B39/10; F16B39/103; F16B39/105; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/972; Y10T; Y10T403/00; Y10T403/70; Y10T403/7047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US626227A
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US1143720A
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US1797296A
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US2317070A
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US2448902A
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US2419849A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |