US2446766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace arch or roof construction
Assignee: MH Detrick Co
•
Filing: 1942-09-16
•
Granted: 1948-08-10
•
Expires: 1962-09-16
Abstract
No abstract record available.
Inventors
- 👤 Louis H Hosbein
- 👤 Ellman Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:15
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/02; F27D1/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1848737A
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US1326753A
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US1457442A
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US1623632A
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US2140185A
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GB489696A
Cited
GB477131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |