Patent US2798928A successfully refreshed from Google Patents.
US2798928A
Expired / Lapsed
US
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Electric incinerator heating unit
Assignee: WASTE KING CORP
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Filing: 1955-01-04
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Granted: 1957-07-09
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Expires: 1975-01-04
Abstract
No abstract record available.
Inventors
- 👤 Friedberg Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:01
CPC Classifications
F; F23; F23G; F23G5/00; F23G5/08; F23G5/10; H; H05; H05B; H05B3/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1731120A
Cited
US1650624A
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US1680404A
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US1921047A
Cited
US2624829A
Cited
US2618731A
Cited
US2701294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |