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US3021890A
Expired / Lapsed
US
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Apparatus for the intermittent and adjustable feeding of fuel oil burners for brickkilns
Assignee: Individual
•
Filing: 1958-01-17
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Granted: 1962-02-20
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Expires: 1978-01-17
Abstract
No abstract record available.
Inventors
- 👤 Donini Domenico Corrado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:20
CPC Classifications
F; F27; F27D; F27D99/00; F27D99/0001; F27D99/0005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |