Patent US2497966A successfully refreshed from Google Patents.
US2497966A
Expired / Lapsed
US
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Crystal holder
Assignee: REEVES HOFFMAN Corp
•
Filing: 1946-01-26
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Granted: 1950-02-21
•
Expires: 1966-01-26
Abstract
No abstract record available.
Inventors
- 👤 Lester C Via
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:46
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/05; H03H9/0504; Y; Y10; Y10T; Y10T29/00; Y10T29/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1933735A
Cited
US1783132A
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US1908320A
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US2070732A
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US1959827A
Cited
US2247627A
Cited
US2264692A
Cited
US2399908A
Cited
US2399919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-20 | 1953-08-22 | 1954-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-20 | 1957-08-22 | 1958-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-20 | 1961-08-22 | 1962-02-21 | $7700.00 | Window Closed / Lapsed |