US3416781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace and apparatus for tilting same
Assignee: O H WARWICK CO
•
Filing: 1964-01-06
•
Granted: 1968-12-17
•
Expires: 1984-01-06
Abstract
No abstract record available.
Inventors
- 👤 Bradley Addison Ballard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:03
CPC Classifications
F; F27; F27B; F27B14/00; F27B14/02; B; B22; B22D; B22D41/00; B22D41/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US919199A
Cited
US1899161A
Cited
US2481699A
Cited
US2620225A
Cited
US2699126A
Cited
US2792602A
Cited
US3107797A
Cited
US3211443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |