Patent US1053183A successfully refreshed from Google Patents.
Patent US2521174A successfully refreshed from Google Patents.
US2521174A
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Peripheral closure
Assignee: Goodrich Corp
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Filing: 1944-10-23
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Granted: 1950-09-05
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Expires: 1964-10-23
Abstract
No abstract record available.
Inventors
- 👤 Carroll P Krupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:48
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/002; F16L21/005; A; A44; A44B; A44B19/00; A44B19/24; A44B19/26; A44B19/30; A44B19/301; A45; A45C; A45C13/00; A45C13/10; A45C13/1023; A45C13/103; Y; Y10; Y10T; Y10T24/00; Y10T24/25; Y10T24/2514
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |