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US2617545A
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Assignee: Davison Chemical Corp
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Filing: 1949-01-25
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Granted: 1952-11-11
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Expires: 1969-01-25
Abstract
No abstract record available.
Inventors
- 👤 Clifford C Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:43
CPC Classifications
F; F26; F26B; F26B11/00; F26B11/02; F26B11/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US315508A
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US1128592A
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US1415990A
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DE509906C
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US1793408A
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US2027977A
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US2063446A
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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) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |