Patent US2831308A successfully refreshed from Google Patents.
US2831308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grass cutter
Assignee: Individual
•
Filing: 1954-09-27
•
Granted: 1958-04-22
•
Expires: 1974-09-27
Abstract
No abstract record available.
Inventors
- 👤 Andrew L Raba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:49
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/42; A01D34/52; A01D34/53
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2165551A
Cited
US2537586A
Cited
US2509343A
Cited
US2634567A
Cited
US2644501A
Cited
US2671299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |