US3420729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded hollow plastic articles of manufacture rigidified with rigid resinous compositions and process for their manufacture
Assignee: Individual
•
Filing: 1966-02-07
•
Granted: 1969-01-07
•
Expires: 1986-02-07
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:57
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/26; A; A47; A47J; A47J36/00; A47J36/02; A47J36/04; B29C39/00; B29C39/14; B29C39/20; B29C39/203; B29C44/00; B29C44/02; B29C44/12; B29C44/18; B29C70/00; B29C70/003; B29C70/0035; B29C70/04; B29C70/06; B29C70/10; B29K; B29K2105/00; B29K2105/06; B29K2309/00; B29K2309/08; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1379
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) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |