US3245781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tensioning strips in measuring instruments and an alloy for use therein
Assignee: WC Heraus GmbH and Co KG
•
Filing: 1962-12-18
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Granted: 1966-04-12
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Expires: 1982-12-18
Abstract
No abstract record available.
Inventors
- 👤 Durer Alfred
- 👤 Ruthardt Konrad
- 👤 Speidel Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:52
CPC Classifications
C; C22; C22C; C22C5/00; C22C5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
IN THE OPERATION OF A MEASURING INSTRUMENT HAVING A ROTATABLE METER MECHANISM AND A TENSION STRIP, THE USE OF AN ALLOY CONSISTING OF 80% PLATINUM AND 20% NICKEL AS THE SAID TENSION STIP WHEREIN THE RATIO (Z) OF TENSILE STRENGTH ($B) TO THE ROOT OF THE TORSIONAL MODULUS ($$)=1.86.
Claim 2
Dependent Claim
49 words
IN THE OPERATION OF A MEASURING INSTRUMENT HAVING A ROTATABLE METER MECHANISM AND A TENSION STRIP, THE USE OF AN ALLOY CONSISTING OF 80% PLATINUM AND 20% NICKEL AS THE SAID TENSION STIP WHEREIN THE RATIO (Z) OF TENSILE STRENGTH ($B) TO THE ROOT OF THE TORSIONAL MODULUS ($$)=1.86.
References Cited (Backward Citations)
US2897443A
Cited
US1166129A
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US1779602A
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US1832307A
Cited
US2890114A
Cited
US2946679A
Cited
US3111623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |