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US2672094A
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Assignee: Individual
•
Filing: 1946-09-18
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Granted: 1954-03-16
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Expires: 1966-09-18
Abstract
No abstract record available.
Inventors
- 👤 Claudius H M Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:06
CPC Classifications
F; F42; F42C; F42C14/00; F42B; F42B12/00; F42B12/02; F42B12/04; F42B12/10; F42C19/00; F42C19/08; F42C19/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1557081A
Cited
US2419414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |