US3012299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Open hearth tap hole repairing form
Assignee: Quigley Co Inc
•
Filing: 1959-08-20
•
Granted: 1961-12-12
•
Expires: 1979-08-20
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Demaison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:57
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/15; F27D3/1509
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1163198A
Cited
US1211632A
Cited
US1948931A
Cited
US2524419A
Cited
US2650411A
Cited
US2650410A
Cited
US2736937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |