US3263015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating elements for high vacuum furnaces
Assignee: ABAR IPSEN INDUSTRIES A NY LP
•
Filing: 1963-11-07
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Granted: 1966-07-26
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Expires: 1983-11-07
Abstract
No abstract record available.
Inventors
- 👤 Charles A S Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:15
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/62; H05B3/0014; H05B3/02; H05B3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A RESISTANCE HEATING DEVICE FOR VACUUM FURNACES COMPRISING ELECTRODES, A MATCHED PAIR OF UPPER HORIZONTAL SUPPORTING RODS RESPECTIVELY CONNECTED TO SAID ELECTRODES, A MATCHED PAIR OF RESISTANCE HEATING ELEMENTS IN SHEET FORM EXTENDING DOWNWARDLY FROM SAID UPPER SUPPORT RODS, A COMMON LOWER HORIZONTAL CONNECTING ROD ENGAGING THE LOWER ENDS OF SAID PAIR OF ELEMENTS,
Claim 2
Dependent Claim
54 words
A RESISTANCE HEATING DEVICE FOR VACUUM FURNACES COMPRISING ELECTRODES, A MATCHED PAIR OF UPPER HORIZONTAL SUPPORTING RODS RESPECTIVELY CONNECTED TO SAID ELECTRODES, A MATCHED PAIR OF RESISTANCE HEATING ELEMENTS IN SHEET FORM EXTENDING DOWNWARDLY FROM SAID UPPER SUPPORT RODS, A COMMON LOWER HORIZONTAL CONNECTING ROD ENGAGING THE LOWER ENDS OF SAID PAIR OF ELEMENTS,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |