Patent US2216362A successfully refreshed from Google Patents.
US2216362A
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US
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Protective composition and use thereof
Assignee: Pyroxylin Products Inc
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Filing: 1937-02-04
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Granted: 1940-10-01
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Expires: 1957-02-04
Abstract
No abstract record available.
Inventors
- 👤 Wilson William Courtney
- 👤 Paul H Yoder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:39
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/26
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) | 1943-10-01 | 1944-04-01 | 1944-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-01 | 1948-04-01 | 1948-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-01 | 1952-04-01 | 1952-10-01 | $7700.00 | Window Closed / Lapsed |