US2779398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forced draft liquid fuel burner of the retort type, and heating apparatus incorporating the same
Assignee: Hupp Corp
•
Filing: 1953-06-05
•
Granted: 1957-01-29
•
Expires: 1973-06-05
Abstract
No abstract record available.
Inventors
- 👤 Richard J Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:06
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/22; B60H1/2203; B60H1/2212; B60H2001/2268
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2501593A
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US2579507A
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US2664312A
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US2712352A
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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) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |