Patent US6364905B1 successfully refreshed from Google Patents.
US2884881A
Expired / Lapsed
US
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Pile height control apparatus
Assignee: James Lees and Sons Co
•
Filing: 1953-08-03
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Granted: 1959-05-05
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Expires: 1973-08-03
Abstract
No abstract record available.
Inventors
- 👤 Robert E Oberholtzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:23
CPC Classifications
D; D05; D05C; D05C15/00; D05C15/04; D05C15/08; D05C15/26; D05C15/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US876562A
Cited
US1863049A
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US1909531A
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US1831458A
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US2042503A
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US2226631A
Cited
US2360398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |