US3522694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible rectangular panel mountings for tractor-supported rotary mower
Assignee: STATE HIGHWAY DEPARTMENT OF STATE OF NORTH DAKOTA
•
Filing: 1968-05-28
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Granted: 1970-08-04
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Expires: 1988-05-28
Abstract
No abstract record available.
Inventors
- 👤 Anders Horn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:37
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/82; A01D34/828; A01D2101/00; Y; Y10; Y10S; Y10S56/00; Y10S56/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2369850A
Cited
US2928223A
Cited
US2963842A
Cited
US3093948A
Cited
GB976056A
Cited
US3450211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |