US2456489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poultry house
Assignee: Individual
•
Filing: 1945-04-28
•
Granted: 1948-12-14
•
Expires: 1965-04-28
Abstract
No abstract record available.
Inventors
- 👤 Jr John D Burkholder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:35
CPC Classifications
A; A01; A01K; A01K31/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US631555A
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GB191223999A
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US1054417A
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US1087913A
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US1515376A
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US1654981A
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US1688836A
Cited
US1903510A
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US1983521A
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GB515875A
Cited
US2267977A
Cited
US2336765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-14 | 1952-06-14 | 1952-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-14 | 1956-06-14 | 1956-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-14 | 1960-06-14 | 1960-12-14 | $7700.00 | Window Closed / Lapsed |