US2468636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil stratifying method and apparatus
Assignee: Miami Boiler & Machine Co
•
Filing: 1945-02-28
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Granted: 1949-04-26
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Expires: 1965-02-28
Abstract
No abstract record available.
Inventors
- 👤 Melvin J Napier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:28
CPC Classifications
C; C11; C11B; C11B1/00; A; A23; A23K; A23K10/00; A23K10/20; A23K10/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US137698A
Cited
US668210A
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GB190125425A
Cited
US1219115A
Cited
US2193871A
Cited
US2395900A
Cited
US2375590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-25 | 1952-10-25 | 1953-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-25 | 1956-10-25 | 1957-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-25 | 1960-10-25 | 1961-04-26 | $7700.00 | Window Closed / Lapsed |