US3531923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination mower and mulcher
Assignee: MANFORD S DE LAY
•
Filing: 1968-07-19
•
Granted: 1970-10-06
•
Expires: 1988-07-19
Abstract
No abstract record available.
Inventors
- 👤 Manford S De Lay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:43
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/001; A01D34/005; A01D2101/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2706372A
Cited
US2659191A
Cited
US2663984A
Cited
US2712211A
Cited
US2718739A
Cited
US2791080A
Cited
US2957295A
Cited
US2942400A
Cited
US3134212A
Cited
US3382653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-05 | 1974-04-06 | 1974-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-05 | 1978-04-06 | 1978-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-05 | 1982-04-06 | 1982-10-06 | $7700.00 | Window Closed / Lapsed |