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US2230752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saturated ethylamine derivatives
Assignee: BILHUBER CORP E
•
Filing: 1938-02-12
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Granted: 1941-02-04
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Expires: 1958-02-12
Abstract
No abstract record available.
Inventors
- 👤 Klavehn Wilfrid
- 👤 Wolf Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:09
CPC Classifications
C; C07; C07C; C07C211/00; C07C211/33; C07C211/34; C07C211/01; C07C211/02; C07C211/09; C10; C10M; C10M2207/00; C10M2207/28; C10M2207/282
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) | 1944-02-04 | 1944-08-05 | 1945-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-04 | 1948-08-05 | 1949-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-04 | 1952-08-05 | 1953-02-04 | $7700.00 | Window Closed / Lapsed |