USRE27065E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion furnace
Assignee: —
•
Filing: 1969-12-23
•
Granted: 1971-02-16
•
Expires: 1989-12-23
Abstract
Abstract A DIFFUSION FURNACE STRUCTURE HAVING A CABINET WHICH SUPPORTS STACKED MODULES, EACH OF WHICH INCLUDES A DRAWER TRAY CARRYING AN ELONGATED CAPSULE ENCLOSING A HEATING ELEMENT, THE ELEMENT BEING ELECTRICALLY CONNECTED TO THE FURNACE CONTROLS SUCH THAT THE ELEMENT CAN BE QUICKLY DISCONNECTED FROM THE CABINET WHEN THE TRAY IS OPENED, AND A PLURALITY OF METAL LEAVES CONSTITUTING A PART OF THE ELECTRICAL CONNECTORS FOR A HEATING ELEMENT, AND WHICH ARE BENDABLE TO FACILITATE AXIAL REMOVAL OF THE ELEMENT THROUGH THE OPENING IN EITHER OF THE ENDS OF AN ELONGATED DIFFUSION FURNACE CAPSULE OR THE LIKE.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:31
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/62; H05B3/64
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |