US2668187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lead through insulator
Assignee: Dayton Aircraft Products Inc
•
Filing: 1949-06-17
•
Granted: 1954-02-02
•
Expires: 1969-06-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter A Von Wald
- 👤 Iii Thomas E Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:41
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/26; H01B17/30; H01B17/303; H01B17/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2082566A
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US705597A
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US1380063A
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US1753317A
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US1878247A
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GB414115A
Cited
US2014056A
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US2171331A
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US2166458A
Cited
US2280711A
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US2515897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-01 | 1957-08-03 | 1958-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-01 | 1961-08-03 | 1962-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-01 | 1965-08-03 | 1966-02-02 | $7700.00 | Window Closed / Lapsed |