US2668944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature compensator alloy
Assignee: Motors Liquidation Co
•
Filing: 1951-12-28
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Granted: 1954-02-09
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Expires: 1971-12-28
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Schwyn
- 👤 Ralph H Mitchel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:37
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A TEMPERATURE-RESPONSIVE COMPENSATOR FOR MAGNETIC MEASURING INSTRUMENTS, SAID COMPENSATOR FORMED FROM AN ALLOY CONTAINING 29.25% TO 31.5% NICKEL, 0.3% TO 2.9% CHROMIUM, SILCON NOT IN EXCESS OF 0.5%, MANGANESE NOT IN EXCESS OF 1%. AND THE BALANCE SUBSTANTIALLY ALL IRON.
Claim 2
Dependent Claim
40 words
A TEMPERATURE-RESPONSIVE COMPENSATOR FOR MAGNETIC MEASURING INSTRUMENTS, SAID COMPENSATOR FORMED FROM AN ALLOY CONTAINING 29.25% TO 31.5% NICKEL, 0.3% TO 2.9% CHROMIUM, SILCON NOT IN EXCESS OF 0.5%, MANGANESE NOT IN EXCESS OF 1%. AND THE BALANCE SUBSTANTIALLY ALL IRON.
References Cited (Backward Citations)
CH54715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |