Patent US3497886A successfully refreshed from Google Patents.
US3497886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold hull structure and device of making same
Assignee: Individual
•
Filing: 1967-10-04
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Granted: 1970-03-03
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Expires: 1987-10-04
Abstract
No abstract record available.
Inventors
- 👤 Thomas Clarence Burnett
- 👤 Martin Ming Yang Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:18
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/44; B29C33/48; B29C33/50; B29C33/505; B63; B63B; B63B5/00; B63B5/24; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/2457; Y10T428/24628; Y10T428/24653; Y10T428/24661
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2815309A
Cited
US3078202A
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US2956292A
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US3138506A
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US3161553A
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US3061492A
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US3150386A
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US3205106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |