US2321879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gaseous diffuser
Assignee: Individual
•
Filing: 1942-04-17
•
Granted: 1943-06-15
•
Expires: 1962-04-17
Abstract
No abstract record available.
Inventors
- 👤 Valdez Rafael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:12
CPC Classifications
C; C13; C13B; C13B20/00; C13B20/005; C13B20/007; B; B01; B01F; B01F23/00; B01F23/10; B01F23/12; B01F25/00; B01F25/30; B01F25/31; B01F25/312; B01F25/3121; B01F25/3124; B01F25/31242; B01F25/314; B01F25/3141; B01F25/3142; B01F25/31423; B01F25/50
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) | 1946-06-14 | 1946-12-14 | 1947-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-06-14 | 1950-12-14 | 1951-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-06-14 | 1954-12-14 | 1955-06-15 | $7700.00 | Window Closed / Lapsed |