US3438370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Face mask
Assignee: JOHN C KRANTZ JR
•
Filing: 1966-10-03
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Granted: 1969-04-15
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Expires: 1986-10-03
Abstract
No abstract record available.
Inventors
- 👤 John C Krantz Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:11
CPC Classifications
A; A41; A41D; A41D13/00; A41D13/05; A41D13/11; A41D13/1107; A41D13/1138; A41D13/1146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A FACE MASK COMPRISING AN OUTWARDLY CONVEX, RELATIVELY THIN-WALLED BODY PORTION INTEGRALLY FORMED OF PLASTIC MATERIAL ADAPTED TO BE POSITIONED AGAINST THE USER''S FACE TO INCLUDE THE NOSE AND CHIN AREA AND PROVIDING AN INCLUDED SPACE IN FRONT THEREOF, THE FRONT WALL OF SAID BODY PORTION HAVING AN OPENING. AN INWARDLY OPENING HINGED FLAP VALVE NORMALLY CLOSING SAID OPENING AND ADAPTED TO UNCOVER SAID OPENING DURING AN INHALATION, AND MEANS FORMING A DISCHARGE PASSAGE TO DIRECT EXHALED AID TOWARD THE USER''S NECK.
Claim 2
Dependent Claim
82 words
A FACE MASK COMPRISING AN OUTWARDLY CONVEX, RELATIVELY THIN-WALLED BODY PORTION INTEGRALLY FORMED OF PLASTIC MATERIAL ADAPTED TO BE POSITIONED AGAINST THE USER''S FACE TO INCLUDE THE NOSE AND CHIN AREA AND PROVIDING AN INCLUDED SPACE IN FRONT THEREOF, THE FRONT WALL OF SAID BODY PORTION HAVING AN OPENING. AN INWARDLY OPENING HINGED FLAP VALVE NORMALLY CLOSING SAID OPENING AND ADAPTED TO UNCOVER SAID OPENING DURING AN INHALATION, AND MEANS FORMING A DISCHARGE PASSAGE TO DIRECT EXHALED AID TOWARD THE USER''S NECK.
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) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |