US3021137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ski trainer
Assignee: Individual
•
Filing: 1959-04-15
•
Granted: 1962-02-13
•
Expires: 1979-04-15
Abstract
No abstract record available.
Inventors
- 👤 Dale W Palmer
- 👤 William R Mctaggart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:42
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/18; A63B21/00; A63B21/012; A63B21/015; A63B22/00; A63B22/14
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) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |