US2222532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet material
Assignee: WALTHER H DUISBERG
•
Filing: 1934-03-08
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Granted: 1940-11-19
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Expires: 1954-03-08
Abstract
No abstract record available.
Inventors
- 👤 Eggert John
- 👤 Wendt Bruno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:21
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C08J7/065; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; D; D21; D21H; D21H21/00; D21H21/14; D21H21/143; C08J2301/00
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) | 1943-11-19 | 1944-05-20 | 1944-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-11-19 | 1948-05-20 | 1948-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-11-19 | 1952-05-20 | 1952-11-19 | $7700.00 | Window Closed / Lapsed |