US3385579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slab heating apparatus
Assignee: Westinghouse Electric Corp
•
Filing: 1965-12-08
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Granted: 1968-05-28
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Expires: 1985-12-08
Abstract
No abstract record available.
Inventors
- 👤 Clarence E Peck
- 👤 George F Bobart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:02
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/0081; C21D1/00; C21D1/34; C21D1/42; F; F27; F27B; F27B9/00; F27B9/30; F27B9/40; F27M; F27M2001/00; F27M2001/15; F27M2001/1539; F27M2001/1547; F27M2001/1552; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3247364A
Cited
US3252693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |