US2998501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making foamed polymeric structural materials
Assignee: Beazer East Inc
•
Filing: 1957-12-27
•
Granted: 1961-08-29
•
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 16:19
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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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 |