Patent US2987752A successfully refreshed from Google Patents.
US2987752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Caster
Assignee: Pemco Wheel Co
•
Filing: 1958-11-10
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Granted: 1961-06-13
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Expires: 1978-11-10
Abstract
No abstract record available.
Inventors
- 👤 John W Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:41
CPC Classifications
B; B60; B60B; B60B33/00; B60B33/04; B60B33/045; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/49943; Y10T403/00; Y10T403/32; Y10T403/32114; Y10T403/32188; Y10T403/32975
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US800377A
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US868067A
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US1382052A
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US1516762A
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US1591057A
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US1814703A
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GB450893A
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US2170472A
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US2453916A
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US2584696A
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US2707945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |