US3054148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing a perforated thermoplastic sheet
Assignee: Individual
•
Filing: 1951-12-06
•
Granted: 1962-09-18
•
Expires: 1971-12-06
Abstract
No abstract record available.
Inventors
- 👤 Zimmerli William Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:49
CPC Classifications
B; B44; B44F; B44F11/00; B26; B26F; B26F1/00; B26F1/26; Y; Y10; Y10S; Y10S425/00; Y10S425/037
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |