Patent US2804835A successfully refreshed from Google Patents.
US2804835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Industrial apparatus and method
Assignee: James Lees and Sons Co
•
Filing: 1956-03-01
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Granted: 1957-09-03
•
Expires: 1976-03-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas T Janney
- 👤 John E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:52
CPC Classifications
D; D05; D05C; D05C15/00; D05C15/04; D05C15/08; D05C15/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1781007A
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US1863049A
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US1909531A
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US1984330A
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US2226631A
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US2360398A
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US2411268A
Cited
US2513261A
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GB735019A
Cited
US2784689A
Cited
US2782741A
Cited
US2782905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-02 | 1961-03-04 | 1961-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-02 | 1965-03-04 | 1965-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-02 | 1969-03-04 | 1969-09-03 | $7700.00 | Window Closed / Lapsed |