US2791232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Siphon pipe
Assignee: Individual
•
Filing: 1954-11-05
•
Granted: 1957-05-07
•
Expires: 1974-11-05
Abstract
No abstract record available.
Inventors
- 👤 Bert A Downs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:53
CPC Classifications
B; B67; B67D; B67D3/00; F; F04; F04F; F04F10/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2924
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US378811A
Cited
US2435049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-06 | 1960-11-05 | 1961-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-06 | 1964-11-05 | 1965-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-06 | 1968-11-05 | 1969-05-07 | $7700.00 | Window Closed / Lapsed |