US2823418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: ExxonMobil Oil Corp
•
Filing: 1953-12-31
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Granted: 1958-02-18
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Expires: 1973-12-31
Abstract
No abstract record available.
Inventors
- 👤 Charles J Fritts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:21
CPC Classifications
B; B29; B29C; B29C57/00; B29C57/005; B32; B32B; B32B15/00; B32B15/04; B32B15/08; F; F16; F16L; F16L58/00; F16L58/18; F16L58/187; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1307372A
Cited
US1589177A
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US1581448A
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US1757994A
Cited
US1983705A
Cited
US2608501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |