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US2129497A
Expired / Lapsed
US
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Spline panel joint
Assignee: I F LAUCKS
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Filing: 1937-12-20
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Granted: 1938-09-06
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Expires: 1957-12-20
Abstract
No abstract record available.
Inventors
- 👤 Erwin A Horn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:38
CPC Classifications
E; E04; E04F; E04F19/00; E04F19/02; E04F19/06
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) | 1941-09-05 | 1942-03-07 | 1942-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-09-05 | 1946-03-07 | 1946-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-09-05 | 1950-03-07 | 1950-09-06 | $7700.00 | Window Closed / Lapsed |