Patent US2122781A successfully refreshed from Google Patents.
US1298844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Level.
Assignee: Individual
•
Filing: 1918-05-13
•
Granted: 1919-04-01
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Expires: 1938-05-13
Abstract
No abstract record available.
Inventors
- 👤 Arend Wichertjes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:49
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/18; G01C9/24; G01C9/26; G01C9/28
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) | 1922-03-31 | 1922-09-30 | 1923-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-03-31 | 1926-09-30 | 1927-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-03-31 | 1930-09-30 | 1931-04-01 | $7700.00 | Window Closed / Lapsed |