US2997320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft coupling
Assignee: Deere and Co
•
Filing: 1959-03-23
•
Granted: 1961-08-22
•
Expires: 1979-03-23
Abstract
No abstract record available.
Inventors
- 👤 Gail R Sutherland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:19
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/10; F16D1/108; F16D1/116; F16D1/06; F16D1/08; F16D1/0852; F16D1/0864; F16D3/00; F16D3/16; F16D3/26; F16D3/38; F16D3/382; F16D3/387; F16B; F16B2200/00; F16B2200/69; F16D2001/103
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US549774A
Cited
US570309A
Cited
GB189621838A
Cited
US1379162A
Cited
US2278698A
Cited
US2749787A
Cited
US2815229A
Cited
US2885231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |