Patent US1803112A successfully refreshed from Google Patents.
Patent US1306056A successfully refreshed from Google Patents.
US1306056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wilfred fottbjosss
Assignee: —
•
Filing: —
•
Granted: 1919-06-10
•
Expires: 1936-06-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:32
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; B; B01; B01D; B01D3/00; Y; Y10; Y10S; Y10S203/00; Y10S203/18
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) | 1922-06-09 | 1922-12-09 | 1923-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-06-09 | 1926-12-09 | 1927-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-06-09 | 1930-12-09 | 1931-06-10 | $7700.00 | Window Closed / Lapsed |