US3395237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric resistance furnace
Assignee: HAROLD S ORTON
•
Filing: 1967-05-03
•
Granted: 1968-07-30
•
Expires: 1987-05-03
Abstract
No abstract record available.
Inventors
- 👤 Harold S Orton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:00
CPC Classifications
C; C03; C03B; C03B5/00; C03B5/02; C03B5/027; H; H05; H05B; H05B3/00; H05B3/0019; H05B3/0023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2636913A
Cited
US2523030A
Cited
US2761890A
Cited
US2749378A
Cited
US2993079A
Cited
US3047647A
Cited
US3182112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |