US1809810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stationary knife for lawn mowers
Assignee: PHILADELPHIA LAWN MOWER Co Inc
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Filing: 1929-01-07
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Granted: 1931-06-09
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Expires: 1949-01-07
Abstract
No abstract record available.
Inventors
- 👤 Harry T Coldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:46
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/42; A01D34/62; A01D2101/00; Y; Y10; Y10S; Y10S56/00; Y10S56/17
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) | 1934-06-08 | 1934-12-08 | 1935-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-06-08 | 1938-12-08 | 1939-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-06-08 | 1942-12-08 | 1943-06-09 | $7700.00 | Window Closed / Lapsed |