Patent US1788709A successfully refreshed from Google Patents.
US1788709A
Expired / Lapsed
US
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Siphon device
Assignee: Individual
•
Filing: 1927-10-11
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Granted: 1931-01-13
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Expires: 1947-10-11
Abstract
No abstract record available.
Inventors
- 👤 Spain Louis B De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:16
CPC Classifications
F; F04; F04F; F04F10/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2829; Y10T137/2842; Y10T137/2863; Y10T137/2911; Y10T137/2917
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) | 1934-01-12 | 1934-07-14 | 1935-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-01-12 | 1938-07-14 | 1939-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-01-12 | 1942-07-14 | 1943-01-13 | $7700.00 | Window Closed / Lapsed |