Patent US2777657A successfully refreshed from Google Patents.
US2777657A
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US
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Tractor mounted support for umbrellas
Assignee: Hettrick Manufacturing Co
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Filing: 1955-12-22
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Granted: 1957-01-15
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Expires: 1975-12-22
Abstract
No abstract record available.
Inventors
- 👤 Lawson J Zent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:11
CPC Classifications
A; A45; A45B; A45B11/00; B; B60; B60J; B60J11/00; B60N; B60N2/00; B60N2/24; B60N2/38; Y; Y10; Y10S; Y10S135/00; Y10S135/909; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/71; Y10T403/7105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1194746A
Cited
US1296049A
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US1646064A
Cited
GB449840A
Cited
US2634928A
Cited
US2681195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |