US2674871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sectionally supported thin refractory wall, bracket, and wall tile therefor
Assignee: MH Detrick Co
•
Filing: 1950-03-01
•
Granted: 1954-04-13
•
Expires: 1970-03-01
Abstract
No abstract record available.
Inventors
- 👤 Louis H Hosbein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:43
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/92; E04B1/94; E04B1/941
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1500808A
Cited
US1831675A
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US2235740A
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US2279515A
Cited
US2275933A
Cited
US2288495A
Cited
US2341971A
Cited
US2581989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |