US2770504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for transfer of contact materials
Assignee: ExxonMobil Oil Corp
•
Filing: 1951-02-14
•
Granted: 1956-11-13
•
Expires: 1971-02-14
Abstract
No abstract record available.
Inventors
- 👤 Jean M Bourguet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:16
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J8/0025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2398759A
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US2509983A
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US2541077A
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US2666731A
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US2676142A
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US2548286A
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US2546625A
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US2587670A
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US2625442A
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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) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |