US3044646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer for boats
Assignee: Individual
•
Filing: 1959-08-17
•
Granted: 1962-07-17
•
Expires: 1979-08-17
Abstract
No abstract record available.
Inventors
- 👤 Henry L Sperow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:46
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/10; B60P3/1033; B60P1/00; B60P1/04; B60P1/06; B60P1/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2453388A
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US2684021A
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US2828036A
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US2793774A
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US2807381A
Cited
US2835401A
Cited
US2849136A
Cited
US2957593A
Cited
US2827187A
Cited
US2905481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |