Patent US3619246A successfully refreshed from Google Patents.
US3471671A
Expired / Lapsed
US
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Device for heating non-metallic material
Assignee: Individual
•
Filing: 1966-05-09
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Granted: 1969-10-07
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Expires: 1986-05-09
Abstract
No abstract record available.
Inventors
- 👤 Herbert August Puschner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:28
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2748239A
Cited
US3081392A
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US2956144A
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US3091172A
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US3211880A
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US3323020A
Cited
US3281568A
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FR1476179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |