US3442069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety interlock mechanism for combine harvester
Assignee: MASSEY COMBINES Corp 225 HENRY ST BRANTFORD ONTARIO CANADA N3T 5ML A CORP OF ONTARIO
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Filing: 1968-07-05
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Granted: 1969-05-06
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Expires: 1988-07-05
Abstract
No abstract record available.
Inventors
- 👤 James G Butler
- 👤 Robert Ashton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:39
CPC Classifications
A; A01; A01D; A01D41/00; A01D41/12; A01D41/14; A01D41/16; Y; Y10; Y10S; Y10S56/00; Y10S56/09
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) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |