US2928633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tree stand
Assignee: HALVORSON TREES Inc
•
Filing: 1957-06-24
•
Granted: 1960-03-15
•
Expires: 1977-06-24
Abstract
No abstract record available.
Inventors
- 👤 Carlton A Holmes
- 👤 Duane O Madsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:07
CPC Classifications
A; A47; A47G; A47G33/00; A47G33/04; A47G33/12; A47G2033/1286; Y; Y10; Y10S; Y10S285/00; Y10S285/921; Y10T; Y10T403/00; Y10T403/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |