US2131146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xx their a
Assignee: —
•
Filing: —
•
Granted: 1938-09-27
•
Expires: 1955-09-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:20
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P1/00; D06P1/44; D06P1/64; D06P1/651; D06P1/65106; D06P3/14; D06P3/16; D06P5/00; D06P5/02; D06P5/04; D06P5/22
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) | 1941-09-26 | 1942-03-28 | 1942-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-09-26 | 1946-03-28 | 1946-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-09-26 | 1950-03-28 | 1950-09-27 | $7700.00 | Window Closed / Lapsed |