US3031541A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1959-08-05
•
Granted: 1962-04-24
•
Expires: 1979-08-05
Abstract
No abstract record available.
Inventors
- 👤 William H Hoffmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:22
CPC Classifications
H; H01; H01H; H01H19/00; H01H19/02; H01H19/10; H01H19/11; H01H19/54; H01H19/56; H01H19/58; H01H19/585
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-23 | 1965-10-23 | 1966-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-23 | 1969-10-23 | 1970-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-23 | 1973-10-23 | 1974-04-24 | $7700.00 | Window Closed / Lapsed |