US2149142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holder
Assignee: LANDON P SMITH Inc
•
Filing: 1938-05-24
•
Granted: 1939-02-28
•
Expires: 1958-05-24
Abstract
No abstract record available.
Inventors
- 👤 Arthur P Jorgenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:13
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/40; B01F35/42; B01F35/422; B01F31/00; B01F31/20; B01F31/25; B01F35/423; Y; Y10; Y10S; Y10S248/00; Y10S248/911; Y10T; Y10T279/00; Y10T279/19; Y10T279/1913; Y10T279/1986; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426
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) | 1942-02-27 | 1942-08-29 | 1943-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-27 | 1946-08-29 | 1947-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-27 | 1950-08-29 | 1951-02-28 | $7700.00 | Window Closed / Lapsed |