US2073299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas carbureting apparatus
Assignee: Ambac International Corp
•
Filing: 1933-05-20
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Granted: 1937-03-09
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Expires: 1953-05-20
Abstract
No abstract record available.
Inventors
- 👤 Roy F Ensign
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:25
CPC Classifications
F; F02; F02M; F02M21/00; F02M21/02; F02M21/04; F02M21/047; F02M21/0218; F02M21/023; F02M21/0239; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30
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) | 1940-03-08 | 1940-09-07 | 1941-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-03-08 | 1944-09-07 | 1945-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-03-08 | 1948-09-07 | 1949-03-09 | $7700.00 | Window Closed / Lapsed |