US3470277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making cellular plastic products
Assignee: General Electric Co
•
Filing: 1966-08-24
•
Granted: 1969-09-30
•
Expires: 1986-08-24
Abstract
No abstract record available.
Inventors
- 👤 Ralph S Hagan
- 👤 Francis J Hartlage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:36
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; Y; Y10; Y10S; Y10S264/00; Y10S264/13; Y10S521/00; Y10S521/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2442940A
Cited
US2409910A
Cited
US2681321A
Cited
US3389199A
Cited
US3262625A
Cited
US3324211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |