US3134995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swimming aid
Assignee: Individual
•
Filing: 1961-04-19
•
Granted: 1964-06-02
•
Expires: 1981-04-19
Abstract
No abstract record available.
Inventors
- 👤 Heinz W Kirchner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:04
CPC Classifications
B; B63; B63C; B63C9/00; B63C9/08; B63C9/13; B63C9/15; B63C9/155
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US660420A
Cited
US1282468A
Cited
US1575255A
Cited
US1854378A
Cited
US2019086A
Cited
US2313151A
Cited
US2633618A
Cited
DE861808C
Cited
US2893020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |