Patent US2733556A successfully refreshed from Google Patents.
US2733556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Whitesell
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
•
Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:22
CPC Classifications
B; B24; B24B; B24B21/00; B24B21/04; B24B21/12; B24B21/14; B24D; B24D9/00; B24D9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US267132A
Cited
US401215A
Cited
US675915A
Cited
US1393625A
Cited
US1484353A
Cited
US2099207A
Cited
US2527554A
Cited
US2410536A
Cited
US2466030A
Cited
US2581270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |