Patent US2080767A successfully refreshed from Google Patents.
US2080767A
Expired / Lapsed
US
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Manufacture of hydrocarbon gases
Assignee: Henry Dreyfuss Associates LLC
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Filing: 1934-10-23
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Granted: 1937-05-18
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Expires: 1954-10-23
Abstract
No abstract record available.
Inventors
- 👤 Dreyfus Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:22
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/76; C07C2/78; C07C1/00; C07C2/86; Y; Y10; Y10S; Y10S208/00; Y10S208/951; Y10S585/00; Y10S585/929; Y10S585/943
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) | 1940-05-17 | 1940-11-16 | 1941-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-05-17 | 1944-11-16 | 1945-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-05-17 | 1948-11-16 | 1949-05-18 | $7700.00 | Window Closed / Lapsed |