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US2218047A
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US
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Hardenable plastic article
Assignee: NAT CASKET Co Inc
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Filing: 1936-05-02
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Granted: 1940-10-15
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Expires: 1956-05-02
Abstract
No abstract record available.
Inventors
- 👤 Murray J Macdonald
- 👤 Schwendler Carl
- 👤 Frederick C Schwendler
- 👤 Christopher S Schwendler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:26
CPC Classifications
A; A61; A61G; A61G17/00; A61G17/007; A61G17/0136
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-10-15 | 1944-04-15 | 1944-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-15 | 1948-04-15 | 1948-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-15 | 1952-04-15 | 1952-10-15 | $7700.00 | Window Closed / Lapsed |