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US2844009A
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Assignee: Individual
•
Filing: 1954-12-01
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Granted: 1958-07-22
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Expires: 1974-12-01
Abstract
No abstract record available.
Inventors
- 👤 Michael K Buchanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:49
CPC Classifications
F; F25; F25C; F25C1/00; F25C1/22; F25C1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR659228A
Cited
US1844488A
Cited
US2511313A
Cited
US2576591A
Cited
US2599972A
Cited
US2776545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |