Patent US2730320A successfully refreshed from Google Patents.
US2730320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Utility carrier
Assignee: Individual
•
Filing: 1953-09-04
•
Granted: 1956-01-10
•
Expires: 1973-09-04
Abstract
No abstract record available.
Inventors
- 👤 Steven L Srader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:11
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1060411A
Cited
US1141287A
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US1638086A
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US1859429A
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US2200921A
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US2331384A
Cited
US2400224A
Cited
US2553929A
Cited
US2550001A
Cited
US2635649A
Cited
US2673452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |