Patent US4368759A successfully refreshed from Google Patents.
Patent US3447199A successfully refreshed from Google Patents.
US3447199A
Expired / Lapsed
US
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Foamed plastic hinge and its manufacture
Assignee: Hercules LLC
•
Filing: 1966-04-08
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Granted: 1969-06-03
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Expires: 1986-04-08
Abstract
No abstract record available.
Inventors
- 👤 David C Trimble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:46
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/02; B29C53/04; B29C53/06; B29C44/00; B29C44/34; B29C44/56; B29C44/5627; B29C44/5636; B29C37/00; B29C37/0053; B29C37/0057; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/10; B29K2023/12; B29K2025/00; Y; Y10; Y10S; Y10S264/00; Y10S264/04; Y10T; Y10T428/00; Y10T428/24; Y10T428/2419
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2781849A
Cited
US2797443A
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US2845104A
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US3043354A
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US3222437A
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US3186574A
Cited
US3274047A
Cited
US3244346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |