Patent US3405541A successfully refreshed from Google Patents.
US3405541A
Expired / Lapsed
US
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Shear pin coupling
Assignee: LILLISTON IMPLEMENT CO
•
Filing: 1966-06-22
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Granted: 1968-10-15
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Expires: 1986-06-22
Abstract
No abstract record available.
Inventors
- 👤 Carroll J Whitfield
- 👤 Verle M Tharpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:53
CPC Classifications
F; F16; F16D; F16D9/00; F16D9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US980341A
Cited
US1637944A
Cited
US2739463A
Cited
US2787467A
Cited
US2838920A
Cited
US2948173A
Cited
US3147834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |