US3413136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abradable coating
Assignee: RTX Corp
•
Filing: 1965-03-10
•
Granted: 1968-11-26
•
Expires: 1985-03-10
Abstract
No abstract record available.
Inventors
- 👤 Roger C Emanuelson
- 👤 William F Witherell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:21
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/18; C23C4/02; C23C4/04; C23C4/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2233304A
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US2930521A
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US3020182A
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US3010480A
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US3084064A
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US3246114A
Cited
US3091548A
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US3254970A
Cited
US3138857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |