Patent US3144850A successfully refreshed from Google Patents.
US3144850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas detecting method and apparatus
Assignee: Pall Corp
•
Filing: 1962-04-25
•
Granted: 1964-08-18
•
Expires: 1982-04-25
Abstract
No abstract record available.
Inventors
- 👤 David J Rosenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:30
CPC Classifications
G; G01; G01N; G01N7/00; G01N7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
APPARATUS FOR DETECTING THE PRESENCE OF A PARTICULAR GAS COMPRISING, IN COMBINATION, MEANS WITHIN A CONFINED AREA CAPABLE OF SORBING AT LEAST A PORTION OF THE GAS TO BE DETECTED, FLEXIBLE MEANS COMMUNICATING WITH SAID CONFINED AREA, AND A WARNING MEANS CAPABLE OF BEING ACTUATED BY THE DEFLECTION OF SAID FLEXIBLE MEANS, WHEREBY WHEN THE PRESSURE OF THE MIXTURE OF GASES IS REDUCED THROUGH SORPTION OF AT LEAST A PORTION OF THE GAS TO BE DETECTED, THE FLEXIBLE MEANS IF DEFLECTED, THEREBY ACTUATING THE WARNING MEANS.
Claim 2
Dependent Claim
86 words
APPARATUS FOR DETECTING THE PRESENCE OF A PARTICULAR GAS COMPRISING, IN COMBINATION, MEANS WITHIN A CONFINED AREA CAPABLE OF SORBING AT LEAST A PORTION OF THE GAS TO BE DETECTED, FLEXIBLE MEANS COMMUNICATING WITH SAID CONFINED AREA, AND A WARNING MEANS CAPABLE OF BEING ACTUATED BY THE DEFLECTION OF SAID FLEXIBLE MEANS, WHEREBY WHEN THE PRESSURE OF THE MIXTURE OF GASES IS REDUCED THROUGH SORPTION OF AT LEAST A PORTION OF THE GAS TO BE DETECTED, THE FLEXIBLE MEANS IF DEFLECTED, THEREBY ACTUATING THE WARNING MEANS.
References Cited (Backward Citations)
US990831A
Cited
US1520086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |