US3419698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Workpiece heating oven
Assignee: Superior Electric Co
•
Filing: 1965-09-21
•
Granted: 1968-12-31
•
Expires: 1985-09-21
Abstract
No abstract record available.
Inventors
- 👤 Palmero Albert
- 👤 Elmer W Madsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:39
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/34; C21D1/42; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1691349A
Cited
US2465306A
Cited
US2578760A
Cited
US2669647A
Cited
US2905797A
Cited
US2876325A
Cited
US3056876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |