Patent US3699198A successfully refreshed from Google Patents.
US3699198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making shaped articles
Assignee: Engineered Fabrics Corp
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Filing: 1969-09-29
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Granted: 1972-10-17
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Expires: 1989-09-29
Abstract
Abstract This invention relates to a method of making an article having a plane of symmetry whereby a portion of the article is used as the form for building the second part of the article and the material used to build the article is a polyurethane reaction mixture, including a method of attaching fittings to said article during construction by releasably attaching the fitting to one surface of the article.
Inventors
- 👤 Keith D Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:01
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/02; B29C41/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |