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US2737682A
Expired / Lapsed
US
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Elevator caster
Assignee: Individual
•
Filing: 1953-11-20
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Granted: 1956-03-13
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Expires: 1973-11-20
Abstract
No abstract record available.
Inventors
- 👤 Albert G Holtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:03
CPC Classifications
B; B60; B60B; B60B33/00; B60B33/04; B60B33/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE230886C
Cited
US343031A
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US1155607A
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US1248185A
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US1348441A
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US1465044A
Cited
US1724892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |