US3390514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distribution and control manifold for air purifying apparatus
Assignee: Bullard Co
•
Filing: 1966-12-07
•
Granted: 1968-07-02
•
Expires: 1986-12-07
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Raschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:24
CPC Classifications
A; A62; A62B; A62B15/00; F; F24; F24F; F24F8/00; F24F8/10; F24F8/108; Y; Y10; Y10T; Y10T137/00; Y10T137/7069
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) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |