Patent US2977839A successfully refreshed from Google Patents.
US2977839A
Expired / Lapsed
US
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Nylon tubing with braided cover and method of making
Assignee: Polymer Corp
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Filing: 1958-07-28
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Granted: 1961-04-04
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Expires: 1978-07-28
Abstract
No abstract record available.
Inventors
- 👤 Robert B Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:42
CPC Classifications
D; D07; D07B; D07B1/00; D07B1/12; B; B29; B29C; B29C48/00; B29C48/15; B29C63/00; B29C63/26; D04; D04D; D04D1/00; F; F16; F16L; F16L11/00; F16L11/04; F16L11/10; B29C48/03; B29C48/09; D07B2201/00; D07B2201/20; D07B2201/2083; D07B2201/209; D07B2205/00; D07B2205/20; D07B2205/2039; D07B2205/2042; D07B2205/2046; D07B2205/205; Y; Y10; Y10S; Y10S138/00; Y10S138/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |