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Patent US2507612A successfully refreshed from Google Patents.
US2507612A
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Assignee: Individual
•
Filing: 1947-05-20
•
Granted: 1950-05-16
•
Expires: 1967-05-20
Abstract
No abstract record available.
Inventors
- 👤 Jr George A Rankin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:50
CPC Classifications
B; B62; B62B; B62B5/00; B62B5/0083; B62B5/0089; B62B1/00; B62B1/02; B62B1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US411353A
Cited
US1125227A
Cited
GB190009754A
Cited
US897853A
Cited
US1143475A
Cited
US1241418A
Cited
US1350527A
Cited
US2150503A
Cited
GB491558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |