US1529441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring and method of producing the same
Assignee: LEINERT VALVE Co
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Filing: 1924-03-13
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Granted: 1925-03-10
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Expires: 1944-03-13
Abstract
No abstract record available.
Inventors
- 👤 Charles H Leinert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:27
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/04; B; B21; B21F; B21F15/00; B21F15/02; B21F15/04; B21F17/00; B21F3/00; B21F3/02; B21F3/04; B21F35/00; B21F35/006; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49609; Y10T428/00; Y10T428/12; Y10T428/12326; Y10T428/12333
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) | 1928-03-09 | 1928-09-08 | 1929-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-03-09 | 1932-09-08 | 1933-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-03-09 | 1936-09-08 | 1937-03-10 | $7700.00 | Window Closed / Lapsed |