US3024554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1960-04-25
•
Granted: 1962-03-13
•
Expires: 1980-04-25
Abstract
No abstract record available.
Inventors
- 👤 Robert M Kempher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:47
CPC Classifications
B; B62; B62B; B62B3/00; B62B3/14; B62B3/1408; B62B3/142; G; G09; G09F; G09F23/00; G09F23/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US759561A
Cited
US1116942A
Cited
US1369550A
Cited
US1378179A
Cited
US1729249A
Cited
DE522693C
Cited
US2723474A
Cited
US2984922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |