Patent US2822441A successfully refreshed from Google Patents.
US2822441A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1956-02-23
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Granted: 1958-02-04
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Expires: 1976-02-23
Abstract
No abstract record available.
Inventors
- 👤 Grant S Fortney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:42
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/44; B60Q1/441; H; H01; H01H; H01H21/00; H01H21/02; H01H21/18; H01H21/22; H01H21/24; H01H21/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2707214A
Cited
US2674669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |