US2968083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot patching of refractory structures
Assignee: Individual
•
Filing: 1956-09-21
•
Granted: 1961-01-17
•
Expires: 1976-09-21
Abstract
No abstract record available.
Inventors
- 👤 George F Lentz
- 👤 William H Finkeldey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:47
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/5022; C04B41/80; C04B41/81; C04B41/85; C04B41/86; C04B2111/00; C04B2111/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2407725A
Cited
US1125741A
Cited
CA175156A
Cited
GB402203A
Cited
US2011498A
Cited
US2108998A
Cited
US2499729A
Cited
US2504185A
Cited
US2726118A
Cited
US2766129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |