US2825224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming stroke development indicator
Assignee: Individual
•
Filing: 1956-06-29
•
Granted: 1958-03-04
•
Expires: 1976-06-29
Abstract
No abstract record available.
Inventors
- 👤 Lindenauer Julian
- 👤 Stanley J Coltune
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:18
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/12; Y; Y10; Y10S; Y10S482/00; Y10S482/909
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) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |