US3456935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat treating furnace with shielding packs
Assignee: Abar Ipsen Industries Inc
•
Filing: 1967-09-20
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Granted: 1969-07-22
•
Expires: 1987-09-20
Abstract
No abstract record available.
Inventors
- 👤 June Richard Bornor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:17
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/0006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3002735A
Cited
US3033547A
Cited
GB861257A
Cited
US3095494A
Cited
US3185460A
Cited
US3327041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |