US2920175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant temperature chamber, in particular a crystal oven
Assignee: LAVOIE LAB Inc
•
Filing: 1954-12-20
•
Granted: 1960-01-05
•
Expires: 1974-12-20
Abstract
No abstract record available.
Inventors
- 👤 Harry J Keen
- 👤 Robert J Papaieck
- 👤 Jr Alfred John Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:37
CPC Classifications
H; H03; H03L; H03L1/00; H03L1/02; H03L1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2170664A
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US2422526A
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US2410041A
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US2462850A
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US2438345A
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US2470134A
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US2556865A
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US2651731A
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US2747069A
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US2791706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |