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US3538693A
Expired / Lapsed
US
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Lawn-mowers
Assignee: PER SIGVARD HAST
•
Filing: 1969-08-11
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Granted: 1970-11-10
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Expires: 1989-08-11
Abstract
No abstract record available.
Inventors
- 👤 Per Sigvard Hast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:51
CPC Classifications
A; A01; A01G; A01G3/00; A01G3/04; A01G3/047; A01G3/053; A01D; A01D34/00; A01D34/01; A01D34/02; A01D34/13; A01D34/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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 |