US3044239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary power lawn mower with improved engine
Assignee: Briggs and Stratton Corp
•
Filing: 1960-09-09
•
Granted: 1962-07-17
•
Expires: 1980-09-09
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Harkness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:20
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/67; A01D34/68; A01D34/6806; A01D2101/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2557598A
Cited
US2791078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |