Patent US4487601A successfully refreshed from Google Patents.
US2385352A
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Method of making hollow panels
Assignee: Mengel Co
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Filing: 1942-06-12
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Granted: 1945-09-25
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Expires: 1962-06-12
Abstract
No abstract record available.
Inventors
- 👤 Davis Oliver Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:03
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/70; E06B3/7015; E06B3/7017; Y; Y10; Y10S; Y10S220/00; Y10S220/09; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T29/00; Y10T29/49; Y10T29/49805
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-09-24 | 1949-03-26 | 1949-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-09-24 | 1953-03-26 | 1953-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-09-24 | 1957-03-26 | 1957-09-25 | $7700.00 | Window Closed / Lapsed |