Patent US3280628A successfully refreshed from Google Patents.
US3280628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High precision capacitive strain gage
Assignee: Individual
•
Filing: 1964-03-31
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Granted: 1966-10-25
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Expires: 1984-03-31
Abstract
No abstract record available.
Inventors
- 👤 Schloss Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:20
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/0001; G01L9/0005; G01L1/00; G01L1/14; G01L1/142
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A DEPTH GAGE COMPRISING: AN EVACUATED HOUSING; PISTON MEANS WITHIN EACH END OF THE SAID HOUSING; A TUBE FASTENED TO THE SAID PISTON AND RESPONSIVE TO A FORCE APPLIED TO THE SAID PISTONS; AND MEANS RESPONSIVE TO THE RESPONSE OF THE TUBE AND PISTONS FOR INDICATING THE AMOUNT OF FORCE APPLIED TO THE SAID PISTONS.
Claim 2
Dependent Claim
55 words
A DEPTH GAGE COMPRISING: AN EVACUATED HOUSING; PISTON MEANS WITHIN EACH END OF THE SAID HOUSING; A TUBE FASTENED TO THE SAID PISTON AND RESPONSIVE TO A FORCE APPLIED TO THE SAID PISTONS; AND MEANS RESPONSIVE TO THE RESPONSE OF THE TUBE AND PISTONS FOR INDICATING THE AMOUNT OF FORCE APPLIED TO THE SAID PISTONS.
References Cited (Backward Citations)
US2367866A
Cited
US3057204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |