US3353408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Altimeter for producing data referenced to a predetermined pressure
Assignee: ASTEK INSTRUMENT CORP
•
Filing: 1965-05-25
•
Granted: 1967-11-21
•
Expires: 1985-05-25
Abstract
No abstract record available.
Inventors
- 👤 Frank G Daleo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:49
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A BAROMETRIC ALTIMETER COMPRISING: MEANS FOR MEASURING BAROMETRIC PRESSURE AND PRODUCING A DIMENSIONAL CHANGE IN RESPONSE THERETO, MEANS FOR SETTING A REFERENCE PRESSURE INTO THE ALTIMETER ABOUT WHICH SAID MEASURING MEANS MEASURES THE PRESSURE, MECHANICAL READOUT MEANS RESPONSIVE TO A DIMENSIONAL CHANGE OF THE PRESSURE MEASURING MEANS AND TO THE
Claim 2
Dependent Claim
50 words
A BAROMETRIC ALTIMETER COMPRISING: MEANS FOR MEASURING BAROMETRIC PRESSURE AND PRODUCING A DIMENSIONAL CHANGE IN RESPONSE THERETO, MEANS FOR SETTING A REFERENCE PRESSURE INTO THE ALTIMETER ABOUT WHICH SAID MEASURING MEANS MEASURES THE PRESSURE, MECHANICAL READOUT MEANS RESPONSIVE TO A DIMENSIONAL CHANGE OF THE PRESSURE MEASURING MEANS AND TO THE
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |