Patent US3246869A successfully refreshed from Google Patents.
Patent US1077471A successfully refreshed from Google Patents.
US1077471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermittently-acting double siphon.
Assignee: SUCROFILTER- und WASSERREINIGUNGS GmbH
•
Filing: 1912-02-06
•
Granted: 1913-11-04
•
Expires: 1932-02-06
Abstract
No abstract record available.
Inventors
- 👤 Julius Herzfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:18
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/04; C02F3/043; Y; Y10; Y10T; Y10T137/00; Y10T137/2713; Y10T137/272; Y10T137/2733; Y10T137/2747; Y10T137/2774; Y10T137/2802; Y10T137/2815; Y10T137/2822
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1916-11-03 | 1917-05-05 | 1917-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1920-11-03 | 1921-05-05 | 1921-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1924-11-03 | 1925-05-05 | 1925-11-04 | $7700.00 | Window Closed / Lapsed |