US2900892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilators
Assignee: Individual
•
Filing: 1955-11-04
•
Granted: 1959-08-25
•
Expires: 1975-11-04
Abstract
No abstract record available.
Inventors
- 👤 Shepherd Wyley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:44
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/64; F04D29/644; F04D29/646
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US577581A
Cited
US1905599A
Cited
US2054526A
Cited
US2157609A
Cited
US2198420A
Cited
US2279620A
Cited
US2218348A
Cited
US2335508A
Cited
US2332552A
Cited
US2571513A
Cited
US2711682A
Cited
US2666378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |