US3530213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a hinge in a block of foam polyethylene
Assignee: Tainer Tech Corp
•
Filing: 1969-01-14
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Granted: 1970-09-22
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Expires: 1989-01-14
Abstract
No abstract record available.
Inventors
- 👤 Richard A Belle Isle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:34
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29L; B29L2031/00; B29L2031/22; B29L2031/712; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24496; Y10T428/24504; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249988; Y10T428/249989
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3123656A
Cited
US2767436A
Cited
US3222437A
Cited
US3317363A
Cited
US3333494A
Cited
US3445553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |