Patent US1746785A successfully refreshed from Google Patents.
US1746785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air trap for pipe lines
Assignee: Individual
•
Filing: 1927-10-28
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Granted: 1930-02-11
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Expires: 1947-10-28
Abstract
No abstract record available.
Inventors
- 👤 Abner D Lindsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:53
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/30; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3021; Y10T137/3028; Y10T137/304; Y10T137/3052; Y10T137/3068; Y10T137/308
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) | 1933-02-10 | 1933-08-12 | 1934-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-02-10 | 1937-08-12 | 1938-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-02-10 | 1941-08-12 | 1942-02-11 | $7700.00 | Window Closed / Lapsed |