US2732748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature compensation for tuning forks
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:33
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US27288A
Cited
US329090A
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US1545251A
Cited
US1653794A
Cited
US1935215A
Cited
US1880923A
Cited
US1912343A
Cited
US1937583A
Cited
US2147492A
Cited
FR914917A
Cited
US2433160A
Cited
US2529430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |