Patent US3436101A successfully refreshed from Google Patents.
US3436101A
Expired / Lapsed
US
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Lubricating hitch ball device
Assignee: Individual
•
Filing: 1967-05-04
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Granted: 1969-04-01
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Expires: 1987-05-04
Abstract
No abstract record available.
Inventors
- 👤 Roy R Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:32
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/48; B60D1/488; B60D1/01; B60D1/06; B60D1/065; B60D1/24; B60D1/247; B60D1/58; B60D1/586; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1889297A
Cited
US2053583A
Cited
FR1054524A
Cited
US2998262A
Cited
US2934366A
Cited
US2857190A
Cited
US3184254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |