US2834971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making plastic boats
Assignee: Individual
•
Filing: 1954-05-12
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Granted: 1958-05-20
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Expires: 1974-05-12
Abstract
No abstract record available.
Inventors
- 👤 Robert E W Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:26
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/50; B29C66/51; B29C66/54; B29C65/00; B29C65/56; B29C65/562; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/46; B29C70/48; B29C70/88; B29C70/887; B63; B63B; B63B5/00; B63B5/24; B29L; B29L2031/00; B29L2031/30; B29L2031/3067
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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |