US2809383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trampolines
Assignee: Individual
•
Filing: 1955-04-15
•
Granted: 1957-10-15
•
Expires: 1975-04-15
Abstract
No abstract record available.
Inventors
- 👤 Robert M Fenner
- 👤 Donald E Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:32
CPC Classifications
A; A63; A63B; A63B5/00; A63B5/11; A47; A47C; A47C17/00; A47C17/64; A47C17/70; A47C17/705; A63B21/00; A63B21/02; A63B21/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1340015A
Cited
FR633471A
Cited
FR39174E
Cited
US1925607A
Cited
GB477435A
Cited
US2370990A
Cited
US2534019A
Cited
US2670478A
Cited
US2671229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |