US2987039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poultry house flooring
Assignee: Individual
•
Filing: 1958-06-27
•
Granted: 1961-06-06
•
Expires: 1978-06-27
Abstract
No abstract record available.
Inventors
- 👤 Russell E Hartsough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:26
CPC Classifications
A; A01; A01K; A01K31/00; A01K31/002; A01K31/007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US165889A
Cited
US1301321A
Cited
US1627268A
Cited
US1684608A
Cited
US1675226A
Cited
GB356379A
Cited
US2753841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |