US3396430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming double walled containers
Assignee: Dow Chemical Co
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Filing: 1967-05-15
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Granted: 1968-08-13
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Expires: 1987-05-15
Abstract
No abstract record available.
Inventors
- 👤 Robert F Westcott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:00
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/58; B29C49/60; B29C49/02; B29C49/06905; B29C49/0691; B29C49/48; B29C49/4802; B29C51/00; B29C51/006; B29C51/08; B29C51/082; B29C51/26; B29C51/30; B29C51/32; B32; B32B; B32B27/00; B65; B65D; B65D81/00; B65D81/24; B65D81/26; B65D81/261; B65D81/262; B29C2049/4805; B29C2791/00; B29C2791/004; B29C2791/006; B29C2791/007; B29K; B29K2995/00; B29K2995/0037; B29K2995/0068
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) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |