US3464434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-mixing apparatus
Assignee: Radiometer AS
•
Filing: 1965-12-30
•
Granted: 1969-09-02
•
Expires: 1985-12-30
Abstract
No abstract record available.
Inventors
- 👤 B Aagaard Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:24
CPC Classifications
B; B01; B01F; B01F35/00; B01F35/20; B01F35/22; B01F35/221; B01F35/2213; B01F23/00; B01F23/10; B01F23/19; B01F35/21; B01F35/211; B01F35/2113; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/0352; Y10T137/2496; Y10T137/2514; Y10T137/6416; Y10T137/6579; Y10T137/8593; Y10T137/87571; Y10T137/87676; Y10T137/87684
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |