US2872965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods and apparatus for forming sandwiches of a foamed plastic layer interposed between webs of sheet material
Assignee: ST Regis Paper Co
•
Filing: 1954-09-15
•
Granted: 1959-02-10
•
Expires: 1974-09-15
Abstract
No abstract record available.
Inventors
- 👤 James B Sisson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:00
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/20; B29C44/32; B29C44/326; B29C44/34; B29C44/36; B29C44/46; B29C44/50; B29C44/505; B29L; B29L2007/00; B29L2009/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/1092; Y10T156/1097; Y10T156/1098; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1722; Y10T156/1727; Y10T156/1729
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) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |