US3520008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced expanded synthetic resin article
Assignee: Gentex Corp
•
Filing: 1966-06-13
•
Granted: 1970-07-14
•
Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 Leonard P Frieder
- 👤 Edgar G Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:27
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/3415; B29C44/3426; B29C44/343; B29C44/02; B29C44/12; B29C44/1266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190915303A
Cited
US2802222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-13 | 1974-01-12 | 1974-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-13 | 1978-01-12 | 1978-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-13 | 1982-01-12 | 1982-07-14 | $7700.00 | Window Closed / Lapsed |