Patent US1250023A successfully refreshed from Google Patents.
US1250023A
Expired / Lapsed
US
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Control apparatus for siphons.
Assignee: Individual
•
Filing: 1916-02-07
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Granted: 1917-12-11
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Expires: 1936-02-07
Abstract
No abstract record available.
Inventors
- 👤 John Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:15
CPC Classifications
E; E03; E03D; E03D1/00; E03D1/02; E03D1/16; E03D1/165; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/2774; Y10T137/2795; Y10T137/7287; Y10T137/7313; Y10T137/7316; Y10T137/7319; Y10T137/7323; Y10T137/7358; Y10T137/7439; Y10T137/7475
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) | 1920-12-10 | 1921-06-11 | 1921-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-12-10 | 1925-06-11 | 1925-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-12-10 | 1929-06-11 | 1929-12-11 | $7700.00 | Window Closed / Lapsed |