Patent US2842801A successfully refreshed from Google Patents.
US2842801A
Expired / Lapsed
US
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Method of repairing thermoplastic dies
Assignee: Lockheed Martin Corp
•
Filing: 1952-02-14
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Granted: 1958-07-15
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Expires: 1972-02-14
Abstract
No abstract record available.
Inventors
- 👤 George J Walkey
- 👤 Clifton P Mcgregor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:50
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/38; B29C33/3842; B29C33/3857; B21; B21D; B21D37/00; B21D37/20; Y; Y10; Y10S; Y10S264/00; Y10S264/66; Y10S425/00; Y10S425/029
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2039105A
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US2119590A
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US2232475A
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US2337036A
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US2319014A
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US2388776A
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US2385318A
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US2428697A
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US2460242A
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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) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |