US3499239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireplace flame simulating device
Assignee: Drum Fire Inc
•
Filing: 1968-03-22
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Granted: 1970-03-10
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Expires: 1988-03-22
Abstract
No abstract record available.
Inventors
- 👤 Adolph J Mungo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:37
CPC Classifications
F; F24; F24C; F24C7/00; F24C7/002; F24C7/004; F21; F21S; F21S10/00; F21S10/04; G; G09; G09F; G09F19/00; F21W; F21W2131/00; F21W2131/40; F21W2131/406
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) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |