US3021893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiating gas burner
Assignee: SCHWEIZ GASAPPARATEFABRIK SOLOTHURN
•
Filing: 1954-11-08
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Granted: 1962-02-20
•
Expires: 1974-11-08
Abstract
No abstract record available.
Inventors
- 👤 Honger Guido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:27
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/12; F23D14/14; F23D14/145; F23D2900/00; F23D2900/00003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US824361A
Cited
GB191318150A
Cited
FR523087A
Cited
US1945902A
Cited
US2015822A
Cited
GB494087A
Cited
US2638976A
Cited
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 |