Patent US3424857A successfully refreshed from Google Patents.
Patent US2503101A successfully refreshed from Google Patents.
US2503101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Map holder
Assignee: Individual
•
Filing: 1947-05-02
•
Granted: 1950-04-04
•
Expires: 1967-05-02
Abstract
No abstract record available.
Inventors
- 👤 Drury Victor Percy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:40
CPC Classifications
G; G09; G09B; G09B29/00; G09B29/06
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) | 1953-04-03 | 1953-10-03 | 1954-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-03 | 1957-10-03 | 1958-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-03 | 1961-10-03 | 1962-04-04 | $7700.00 | Window Closed / Lapsed |