US3531828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making synthetic plastic sheet material with color pattern
Assignee: Rowland Products Inc
•
Filing: 1967-01-03
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Granted: 1970-10-06
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Expires: 1987-01-03
Abstract
No abstract record available.
Inventors
- 👤 Jan P Nauta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:49
CPC Classifications
B; B29; B29D; B29D12/00; B29D12/02; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/16; B29C48/17; B29C48/18; B29C48/185; B29C48/21; B29C48/25; B29C48/30; B29C48/305; B29C48/307
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1730673A
Cited
US2573050A
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US2632204A
Cited
US2803041A
Cited
USRE26237E
Cited
US3274646A
Cited
US3443278A
Cited
US3422175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |