US3514302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory compositions
Assignee: Amsted Industries Inc
•
Filing: 1967-04-27
•
Granted: 1970-05-26
•
Expires: 1987-04-27
Abstract
No abstract record available.
Inventors
- 👤 Tracy A Willmore
- 👤 Alfred W Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:09
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |