US2615724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible sled
Assignee: Individual
•
Filing: 1949-06-27
•
Granted: 1952-10-28
•
Expires: 1969-06-27
Abstract
No abstract record available.
Inventors
- 👤 Walter J S Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:46
CPC Classifications
B; B62; B62B; B62B13/00; B62B13/16; B62B2205/00; B62B2205/04; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1099
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) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |