US2016278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vent
Assignee: Atlantic Richfield Co
•
Filing: 1934-04-12
•
Granted: 1935-10-08
•
Expires: 1954-04-12
Abstract
No abstract record available.
Inventors
- 👤 Carl H Ehlers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:13
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/36; F16K15/00; F16K15/02; F16K15/06; F16K15/063; F16K2200/00; F16K2200/30; F16K2200/302; F16K2200/305; F16K2200/3053; Y; Y10; Y10T; Y10T137/00; Y10T137/0753; Y10T137/0874; Y10T137/7722; Y10T137/7771; Y10T137/7772; Y10T137/7774; Y10T137/7775; Y10T137/7777; Y10T137/7837; Y10T137/7904; Y10T137/7905; Y10T137/7922; Y10T137/7929; Y10T137/7931; Y10T137/794; Y10T137/8085
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) | 1938-10-07 | 1939-04-08 | 1939-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-10-07 | 1943-04-08 | 1943-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-10-07 | 1947-04-08 | 1947-10-08 | $7700.00 | Window Closed / Lapsed |