US3538692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grass mowing and mulching device
Assignee: Individual
•
Filing: 1968-03-19
•
Granted: 1970-11-10
•
Expires: 1988-03-19
Abstract
No abstract record available.
Inventors
- 👤 George Cope
- 👤 Floyd Les Hornberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:15
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/001; A01D34/005; A01D2101/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2764865A
Cited
US2786318A
Cited
US2936564A
Cited
US3050925A
Cited
US3085386A
Cited
US3340682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |