US2758843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chuck
Assignee: Individual
•
Filing: 1952-08-11
•
Granted: 1956-08-14
•
Expires: 1972-08-11
Abstract
No abstract record available.
Inventors
- 👤 Coulson Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:08
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/025; B23B31/10; B23B31/12; B23B31/16; B23B31/16195; B23B31/162; B23B31/16204; B23B31/16229; Y; Y10; Y10T; Y10T279/00; Y10T279/19; Y10T279/1961; Y10T279/1986; Y10T279/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US945261A
Cited
CH40350A
Cited
US1251986A
Cited
US1699358A
Cited
US1844616A
Cited
US1849546A
Cited
CH221655A
Cited
US2356198A
Cited
US2543117A
Cited
US2523374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |