US2719213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat shield
Assignee: Individual
•
Filing: 1949-07-21
•
Granted: 1955-09-27
•
Expires: 1969-07-21
Abstract
No abstract record available.
Inventors
- 👤 Oliver F Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:02
CPC Classifications
F; F24; F24D; F24D13/00; F24D13/02; F24D13/022; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2251697A
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US2345300A
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US2523566A
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GB608924A
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US2559077A
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US2511540A
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US2523353A
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US2487695A
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US2473183A
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US2469466A
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US2569340A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-26 | 1959-03-28 | 1959-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-26 | 1963-03-28 | 1963-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-26 | 1967-03-28 | 1967-09-27 | $7700.00 | Window Closed / Lapsed |