Patent US3469378A successfully refreshed from Google Patents.
US3469378A
Expired / Lapsed
US
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Rotating disc type mowing machine
Assignee: P J Zweegers en Zonen Landbouwmachinefabriek BV
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Filing: 1966-05-17
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Granted: 1969-09-30
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Expires: 1986-05-17
Abstract
No abstract record available.
Inventors
- 👤 Johannes L Heesters
- 👤 Laurentius C Heesters
- 👤 Adrianus L Heesters
- 👤 Petrus W Zweegers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:32
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/64; A01D34/66; A01D34/664; A01D34/73; A01D34/76; A01D75/00; A01D75/18; A01D75/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2625784A
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US2690040A
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US2746227A
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US3040502A
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US2991612A
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US3070938A
Cited
US3138911A
Cited
US3395522A
Cited
US3234719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |