Patent US2318048A successfully refreshed from Google Patents.
Patent US1899439A successfully refreshed from Google Patents.
US1899439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lawn-mower
Assignee: EVERSHARP LAWNMOWER Co
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Filing: 1931-12-23
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Granted: 1933-02-28
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Expires: 1951-12-23
Abstract
No abstract record available.
Inventors
- 👤 Chester A Gratiot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:35
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/42; A01D34/46; A01D2101/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-02-28 | 1936-08-29 | 1937-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-02-28 | 1940-08-29 | 1941-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-02-28 | 1944-08-29 | 1945-02-28 | $7700.00 | Window Closed / Lapsed |