Patent US2683979A successfully refreshed from Google Patents.
US2683979A
Expired / Lapsed
US
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Padlock key support and operating chain
Assignee: Individual
•
Filing: 1950-10-26
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Granted: 1954-07-20
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Expires: 1970-10-26
Abstract
No abstract record available.
Inventors
- 👤 Wilfred E Stageberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:51
CPC Classifications
E; E05; E05B; E05B67/00; E05B67/06; E05B67/22; A; A44; A44B; A44B15/00; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/437; Y10T70/446; Y10T70/452; Y10T70/463; Y10T70/80; Y10T70/8432; Y10T70/8676; Y10T70/8757
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US104640A
Cited
US237583A
Cited
US1187471A
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US1498164A
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US1571425A
Cited
US1902297A
Cited
US2136054A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |