US2076953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of hydrocyanic acid
Assignee: EIDP Inc
•
Filing: 1933-12-07
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Granted: 1937-04-13
•
Expires: 1953-12-07
Abstract
No abstract record available.
Inventors
- 👤 Burritt S Lacy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:06
CPC Classifications
C; C01; C01C; C01C3/00; C01C3/02; C01C3/0208
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) | 1940-04-12 | 1940-10-12 | 1941-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-04-12 | 1944-10-12 | 1945-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-04-12 | 1948-10-12 | 1949-04-13 | $7700.00 | Window Closed / Lapsed |