US3439078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for stamping thermoplastic elements
Assignee: Poly-Pak Corp of America
•
Filing: 1967-02-16
•
Granted: 1969-04-15
•
Expires: 1987-02-16
Abstract
No abstract record available.
Inventors
- 👤 Carlton L Whiteford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:50
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/08; B29C51/082; B29C51/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2365637A
Cited
US2410857A
Cited
US2760233A
Cited
US2924852A
Cited
US3220102A
Cited
US3258813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |