Patent US3027073A successfully refreshed from Google Patents.
US3027073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Handelman
Assignee: —
•
Filing: —
•
Granted: 1962-03-27
•
Expires: 1979-03-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:54
CPC Classifications
G; G06; G06G; G06G1/00; G06G1/0005; G06G1/001; G09; G09B; G09B19/00; G09B19/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB271335A
Cited
US1044184A
Cited
US1119959A
Cited
US1156770A
Cited
US1789890A
Cited
US2177176A
Cited
US2369717A
Cited
US2386082A
Cited
US2427976A
Cited
US2660375A
Cited
US2748514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |