Patent US1524935A successfully refreshed from Google Patents.
US1524935A
Expired / Lapsed
US
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Method of making couplings
Assignee: Individual
•
Filing: 1922-02-27
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Granted: 1925-02-03
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Expires: 1942-02-27
Abstract
No abstract record available.
Inventors
- 👤 Edward E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:11
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/84; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49606; Y10T403/00; Y10T403/57; Y10T403/5721; Y10T403/5726; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7081
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) | 1928-02-03 | 1928-08-04 | 1929-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-02-03 | 1932-08-04 | 1933-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-02-03 | 1936-08-04 | 1937-02-03 | $7700.00 | Window Closed / Lapsed |