Patent US2054252A successfully refreshed from Google Patents.
US2054252A
Expired / Lapsed
US
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Device for the production of oscillations
Assignee: Individual
•
Filing: 1934-07-16
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Granted: 1936-09-15
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Expires: 1954-07-16
Abstract
No abstract record available.
Inventors
- 👤 Hausser Isolde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:59
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/01; H03B9/02; H01; H01J; H01J19/00; H01J19/02; H01J25/00; H01J25/68; H01J2893/00; H01J2893/0001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1939-09-15 | 1940-03-16 | 1940-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-09-15 | 1944-03-16 | 1944-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-09-15 | 1948-03-16 | 1948-09-15 | $7700.00 | Window Closed / Lapsed |