Patent US3715919A successfully refreshed from Google Patents.
US2818291A
Expired / Lapsed
US
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Utensil handle-changing device
Assignee: Individual
•
Filing: 1956-06-27
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Granted: 1957-12-31
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Expires: 1976-06-27
Abstract
No abstract record available.
Inventors
- 👤 Marshall C Corns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:51
CPC Classifications
B; B25; B25G; B25G1/00; B25G1/06; B25G1/04; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32262; Y10T403/32319; Y10T403/32409
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1461813A
Cited
US1501605A
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US2286655A
Cited
US2555226A
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US2750616A
Cited
US2738999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |