US2801377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vernier condenser
Assignee: Oak Manufacturing Co
•
Filing: 1954-03-09
•
Granted: 1957-07-30
•
Expires: 1974-03-09
Abstract
No abstract record available.
Inventors
- 👤 Rudolf W Selbmann
- 👤 Morris L Tucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:13
CPC Classifications
H; H03; H03J; H03J1/00; H03J1/06; H03J1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2186949A
Cited
US2177483A
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US2551228A
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US2503579A
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US2598247A
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US2584120A
Cited
US2562263A
Cited
US2620378A
Cited
US2585844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |