Patent US2987307A successfully refreshed from Google Patents.
US2987307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined continuous sintering and cooler machine
Assignee: Beazer East Inc
•
Filing: 1958-06-18
•
Granted: 1961-06-06
•
Expires: 1978-06-18
Abstract
No abstract record available.
Inventors
- 👤 Paul J Homan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:07
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/16; C22B1/20; B; B01; B01J; B01J19/00; F; F27; F27B; F27B21/00; F27B21/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US952680A
Cited
US1281585A
Cited
US1768534A
Cited
US1797931A
Cited
DE539901C
Cited
US2527310A
Cited
DE948598C
Cited
US2750274A
Cited
FR1093611A
Cited
US2832584A
Cited
US2763479A
Cited
US2745659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |