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Patent US1439901A successfully refreshed from Google Patents.
US1439901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
oe elmxra
Assignee: —
•
Filing: —
•
Granted: 1922-12-26
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Expires: 1939-12-26
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:17
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/30; F16C33/38; F16C33/41; F16C19/00; F16C19/02; F16C19/14; F16C19/18; F16C19/181; F16C19/183; F16C19/184; F16C33/40; F16C33/58; F16C33/60
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) | 1925-12-25 | 1926-06-26 | 1926-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-12-25 | 1930-06-26 | 1930-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-12-25 | 1934-06-26 | 1934-12-26 | $7700.00 | Window Closed / Lapsed |