US2941216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kits for producing boat hull and other hollow objects
Assignee: Individual
•
Filing: 1956-03-02
•
Granted: 1960-06-21
•
Expires: 1976-03-02
Abstract
No abstract record available.
Inventors
- 👤 Wilbert T Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:09
CPC Classifications
B; B63; B63B; B63B5/00; B63B5/24; B63B73/00; B63B73/70; B63B73/74; B63B1/00; B63B1/16; B63B1/18; B63B1/20; B63B2001/201; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US833511A
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US1361835A
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US1394726A
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US2394423A
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US2348935A
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US2397049A
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US2409782A
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US2417586A
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US2425507A
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US2495640A
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US2662237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |