Patent US3453085A successfully refreshed from Google Patents.
US3453085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for providing an oxygencarbon dioxide atmosphere
Assignee: Whirlpool Corp
•
Filing: 1964-06-26
•
Granted: 1969-07-01
•
Expires: 1984-06-26
Abstract
No abstract record available.
Inventors
- 👤 James W Lannert
- 👤 George E Townsend
- 👤 David W Schrage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:09
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/70; A23B2/704; A23B2/7045; B; B01; B01F; B01F23/00; B01F23/10; B01F23/19; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |