US3534128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a foamed plastic article having portions of varying thickness and density
Assignee: Individual
•
Filing: 1968-11-06
•
Granted: 1970-10-13
•
Expires: 1988-11-06
Abstract
No abstract record available.
Inventors
- 👤 Alexander G Makowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:58
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/42; B29C51/428; B29C51/08; B29C51/082; B29C53/00; B29C53/02; B29C53/04; B29C53/06; B29C35/00; B29C35/16; B29C2035/1616; B29C37/00; B29C37/0053; B29C37/0057; B29K; B29K2025/00; B29K2105/00; B29K2105/04; B29L; B29L2031/00; B29L2031/712; B29L2031/7162; B29L2031/7168
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) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |