US3412231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion die including electrical cartridge heaters
Assignee: International Paper Co
•
Filing: 1966-03-29
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Granted: 1968-11-19
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Expires: 1986-03-29
Abstract
No abstract record available.
Inventors
- 👤 John F Mcelligott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:31
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/0014; B; B29; B29C; B29C48/00; B29C48/25; B29C48/78; B29C48/86; B29C48/865; B29C48/03; B29C48/07; B29C48/08; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
IN AN APPARATUS ADAPTED TO HEAT, IN COMBINATION, A HEAT-CONDUCTIVE FLANGE, A HEATING ELEMENT, A HEAT-CONDUCTIVE TAPERED ANNULAR BUSHING ADAPTED TO RECEIVE THE HEATING ELEMENT INTERIORLY, MEANS DEFINING A LONGITUDINAL SLOT IN THE BUSHING, AND MEANS DEFINING A TAPERED HOLE IN THE HEAT-CONDUCTIVE FLANGE ADAPTED TO RECEIVE THE BUSHING AND UNDERSIZED RELATIVE THERETO.
Claim 2
Dependent Claim
53 words
IN AN APPARATUS ADAPTED TO HEAT, IN COMBINATION, A HEAT-CONDUCTIVE FLANGE, A HEATING ELEMENT, A HEAT-CONDUCTIVE TAPERED ANNULAR BUSHING ADAPTED TO RECEIVE THE HEATING ELEMENT INTERIORLY, MEANS DEFINING A LONGITUDINAL SLOT IN THE BUSHING, AND MEANS DEFINING A TAPERED HOLE IN THE HEAT-CONDUCTIVE FLANGE ADAPTED TO RECEIVE THE BUSHING AND UNDERSIZED RELATIVE THERETO.
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) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |