US2998081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sod harvesting machines
Assignee: Individual
•
Filing: 1957-07-19
•
Granted: 1961-08-29
•
Expires: 1977-07-19
Abstract
No abstract record available.
Inventors
- 👤 Mike L Hartmangruber
- 👤 Louis J Hartmangruber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:51
CPC Classifications
A; A01; A01G; A01G20/00; A01G20/10; A01G20/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US41371A
Cited
US1578859A
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US1830245A
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US2401653A
Cited
US2617347A
Cited
US2740211A
Cited
US2663242A
Cited
US2788725A
Cited
US2756661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |