Patent US3553068A successfully refreshed from Google Patents.
Patent US4337464A successfully refreshed from Google Patents.
Patent US2097291A successfully refreshed from Google Patents.
Patent US4005437A successfully refreshed from Google Patents.
Patent US1386972A successfully refreshed from Google Patents.
Patent US2736009A successfully refreshed from Google Patents.
US2736009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lilzlj
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
•
Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:30
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/08; H02H7/0822
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |