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US3056922A
Expired / Lapsed
US
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Assignee: W W HENRY CO Inc
•
Filing: 1960-04-26
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Granted: 1962-10-02
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Expires: 1980-04-26
Abstract
No abstract record available.
Inventors
- 👤 Vall Wilbur E Du
- 👤 Gammon William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:05
CPC Classifications
H; H05; H05G; H05G1/00; H05G1/08; H05G1/26; H05G1/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2822516A
Cited
US2860304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |