US2866449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warm air gas-fired heating element
Assignee: Individual
•
Filing: 1955-11-25
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Granted: 1958-12-30
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Expires: 1975-11-25
Abstract
No abstract record available.
Inventors
- 👤 John M Baeza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:58
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/02; F28F3/04; F28F3/042; F28F3/046; F24; F24H; F24H3/00; F24H3/02; F24H3/06; F24H3/10; F24H3/105
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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |