Patent US2018452A successfully refreshed from Google Patents.
US2018452A
Expired / Lapsed
US
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Collet
Assignee: Individual
•
Filing: 1933-08-03
•
Granted: 1935-10-22
•
Expires: 1953-08-03
Abstract
No abstract record available.
Inventors
- 👤 Laughlin Guy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:28
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/12; B23B31/20; B23B31/201; B23B31/202; B23B31/026; B23B2231/00; B23B2231/20; B23B2231/2027; B23B2231/2037; B23B2231/2086; B23B2260/00; B23B2260/136; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17017; Y10T279/17411; Y10T279/17471; Y10T279/17529; Y10T279/19; Y10T279/1986; Y10T279/34; Y10T279/3462
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-10-21 | 1939-04-22 | 1939-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-10-21 | 1943-04-22 | 1943-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-10-21 | 1947-04-22 | 1947-10-22 | $7700.00 | Window Closed / Lapsed |