US3056397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall heater
Assignee: H C LITTLE BURNER Co Inc
•
Filing: 1957-02-27
•
Granted: 1962-10-02
•
Expires: 1977-02-27
Abstract
No abstract record available.
Inventors
- 👤 Harry C Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:02
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/002; F24C3/004; Y; Y10; Y10S; Y10S116/00; Y10S116/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1790777A
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US1789597A
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US1926104A
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US2163928A
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US2162410A
Cited
US2158643A
Cited
US2200645A
Cited
US2632435A
Cited
US2594608A
Cited
US2755794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |