US3478138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making thermoplastic articles having non-planar surface contours
Assignee: Individual
•
Filing: 1966-12-01
•
Granted: 1969-11-11
•
Expires: 1986-12-01
Abstract
No abstract record available.
Inventors
- 👤 Charles E Friesner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:05
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/22; B29C53/24; B29C43/00; B29C43/22; B29C43/224; B29C48/00; B29C48/001; B29C48/0011; B29C48/0018; B29C48/002; B29C48/0021; B29C48/0022; B29C48/03; B29C48/07; B29C48/08; B29C48/12; B29C48/13; B29C48/15; B29C48/16; B29C48/18; B29C48/21; Y; Y10; Y10S; Y10S425/00; Y10S425/235
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2736066A
Cited
US2988774A
Cited
US2928133A
Cited
US3085292A
Cited
US3256376A
Cited
US3328503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |