US3203338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic ventilator support
Assignee: Individual
•
Filing: 1963-12-27
•
Granted: 1965-08-31
•
Expires: 1983-12-27
Abstract
No abstract record available.
Inventors
- 👤 John P Dry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:58
CPC Classifications
F; F24; F24F; F24F13/00; Y; Y10; Y10S; Y10S55/00; Y10S55/06; Y10S55/31
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN AN AIR CIRCULATING CONDUIT INCLUDING A DUCT HAVING SIDE WALLS CONSTRUCTED OF MAGNET RESPONSIVE MATERIAL AND SAID WALLS TERMINATING IN AN OPENING AND A GRILL FOR COVERING SAID OPENING, A MOUNTING SUPPORT FOR SAID GRILL COMPRISING A RESILIENT ARM, MEANS FOR ENGAGING ONE END OF SAID RESILIENT ARM TO SAID GRILL AND THE OTHER END THEREOF TO SAID UCT, SAID MEANS INCLUDING A PAIR OF MAGNETS EACH SECURED TO A RESPECTIVE END OF SAID ARM FOR ENGAGING SAID GRILL AND SAID DUCT RESPECTIVELY FOR FORMING A MAGNETIC CIRCUIT.
Claim 2
Dependent Claim
89 words
IN AN AIR CIRCULATING CONDUIT INCLUDING A DUCT HAVING SIDE WALLS CONSTRUCTED OF MAGNET RESPONSIVE MATERIAL AND SAID WALLS TERMINATING IN AN OPENING AND A GRILL FOR COVERING SAID OPENING, A MOUNTING SUPPORT FOR SAID GRILL COMPRISING A RESILIENT ARM, MEANS FOR ENGAGING ONE END OF SAID RESILIENT ARM TO SAID GRILL AND THE OTHER END THEREOF TO SAID UCT, SAID MEANS INCLUDING A PAIR OF MAGNETS EACH SECURED TO A RESPECTIVE END OF SAID ARM FOR ENGAGING SAID GRILL AND SAID DUCT RESPECTIVELY FOR FORMING A MAGNETIC CIRCUIT.
References Cited (Backward Citations)
US2147482A
Cited
US2571726A
Cited
US2722170A
Cited
US2985093A
Cited
US3145477A
Cited
US3149268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |