US2830308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible boat
Assignee: Individual
•
Filing: 1955-10-17
•
Granted: 1958-04-15
•
Expires: 1975-10-17
Abstract
No abstract record available.
Inventors
- 👤 Leland W Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:23
CPC Classifications
B; B63; B63B; B63B7/00; B63B7/06; B63B2007/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191420583A
Cited
US568255A
Cited
GB300366A
Cited
GB391955A
Cited
US2332259A
Cited
US2346081A
Cited
US2504225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |