US3101587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hourglass timing device
Assignee: Individual
•
Filing: 1962-02-02
•
Granted: 1963-08-27
•
Expires: 1982-02-02
Abstract
No abstract record available.
Inventors
- 👤 Malcolm W Patrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:46
CPC Classifications
G; G04; G04F; G04F1/00; G04F1/04; G04F1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1175816A
Cited
US2963851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |