Patent US4631977A successfully refreshed from Google Patents.
Patent US1652835A successfully refreshed from Google Patents.
US1652835A
Expired / Lapsed
US
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Method of making insulator pins
Assignee: Individual
•
Filing: 1922-05-31
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Granted: 1927-12-13
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Expires: 1942-05-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles L Peirce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:39
CPC Classifications
B; B21; B21D; B21D53/00; H; H01; H01B; H01B17/00; H01B17/14; H01B17/16; Y; Y10; Y10S; Y10S411/00; Y10S411/914; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49227; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49927; Y10T29/49929; Y10T29/49936
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) | 1930-12-12 | 1931-06-13 | 1931-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-12-12 | 1935-06-13 | 1935-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-12-12 | 1939-06-13 | 1939-12-13 | $7700.00 | Window Closed / Lapsed |