US2731910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
H gruver
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:22
CPC Classifications
B; B41; B41L; B41L45/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1270351A
Cited
US1574570A
Cited
US1576598A
Cited
US2033383A
Cited
US2163492A
Cited
US2359851A
Cited
US2511921A
Cited
US2542073A
Cited
US2572450A
Cited
US2525982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |