US2884509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating element containing a conductive mesh
Assignee: ELECTROFILM Inc
•
Filing: 1957-03-05
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Granted: 1959-04-28
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Expires: 1977-03-05
Abstract
No abstract record available.
Inventors
- 👤 Arthur N Heath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:32
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/342; H05B2203/00; H05B2203/002; H05B2203/003; H05B2203/007; H05B2203/013; H05B2203/014; H05B2203/015; H05B2203/017; H05B2203/033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732479A
Cited
US2199810A
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US2406367A
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US2559077A
Cited
US2678993A
Cited
US2712591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |