Patent US2099819A successfully refreshed from Google Patents.
Patent US2815004A successfully refreshed from Google Patents.
US2815004A
Expired / Lapsed
US
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Air cushion for pneumatic pruning shears
Assignee: Individual
•
Filing: 1955-06-14
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Granted: 1957-12-03
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Expires: 1975-06-14
Abstract
No abstract record available.
Inventors
- 👤 Droman Russell Hobart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:10
CPC Classifications
A; A01; A01G; A01G3/00; A01G3/02; A01G3/033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US531792A
Cited
US559526A
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US2266867A
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US2347346A
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US2556698A
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US2612140A
Cited
US2600540A
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US2699756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |