Patent US3444036A successfully refreshed from Google Patents.
US3444036A
Expired / Lapsed
US
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Structure having an internal cellular core and its manufacture
Assignee: Monsanto Co
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Filing: 1966-05-10
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Granted: 1969-05-13
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Expires: 1986-05-10
Abstract
No abstract record available.
Inventors
- 👤 David A Russell
- 👤 Edgar E Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:33
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/3442; B29C44/3446; B29C44/3453; B29C44/20; B29C44/22; B29C44/24; B29C44/56; B29C44/5627; B29C44/5636; B29C51/00; B29C51/14; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/249987; Y10T428/249988; Y10T428/249989; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913
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) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |