US3501141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trampoline and backstops
Assignee: COLE EDWARD W
•
Filing: 1968-09-05
•
Granted: 1970-03-17
•
Expires: 1988-09-05
Abstract
No abstract record available.
Inventors
- 👤 George P Nissen
- 👤 Lawrence H Conover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:24
CPC Classifications
A; A63; A63B; A63B5/00; A63B5/11; A63B67/00; A63B67/002; A63B2067/005; A63B21/00; A63B21/02; A63B21/023; A63B21/055; A63B21/0552; A63B63/00; A63B71/00; A63B71/02; A63B71/022
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) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |