Patent US20030105520A1 successfully refreshed from Google Patents.
US2998501A
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Apparatus for making foamed polymeric structural materials
Assignee: Beazer East Inc
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Filing: 1957-12-27
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Granted: 1961-08-29
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Expires: 1977-12-27
Abstract
No abstract record available.
Inventors
- 👤 Edwin A Edberg
- 👤 Richard H Immel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:51
CPC Classifications
F; F23; F23C; F23C99/00; B; B29; B29C; B29C35/00; B29C35/02; B29C35/12; B29C35/14; B29C44/00; B29C44/20; B29C44/206; B29C44/30; B29C44/304; B29C67/00; B29C67/20; B29C67/207; B32; B32B; B32B27/00; C; C08; C08J; C08J9/00; C08J9/22; C08J9/224; B29L; B29L2007/00; B29L2009/00; F23C2700/00; F23C2700/02; F23C2700/023; Y; Y10; Y10S; Y10S264/00; Y10S264/10; Y10S264/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2423902A
Cited
US2436732A
Cited
US2482062A
Cited
US2463288A
Cited
US2459225A
Cited
US2669521A
Cited
US2650289A
Cited
US2787809A
Cited
US2744291A
Cited
US2664411A
Cited
US2697773A
Cited
US2695427A
Cited
US2894918A
Cited
US2770406A
Cited
US2872965A
Cited
US2841205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |