US2875678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilators
Assignee: Individual
•
Filing: 1954-07-06
•
Granted: 1959-03-03
•
Expires: 1974-07-06
Abstract
No abstract record available.
Inventors
- 👤 Shepherd Wyley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:35
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/64; F04D29/644; F04D29/646; F24; F24F; F24F7/00; F24F7/02; F24F7/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US715169A
Cited
US776642A
Cited
US1614190A
Cited
US1604448A
Cited
US2198420A
Cited
US2218348A
Cited
US2332552A
Cited
US2551004A
Cited
US2571513A
Cited
US2638835A
Cited
US2684621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |