US2342020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring balancer
Assignee: Chicago Pneumatic Tool Co LLC
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Filing: 1939-06-27
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Granted: 1944-02-15
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Expires: 1959-06-27
Abstract
No abstract record available.
Inventors
- 👤 Edward W Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:26
CPC Classifications
B; B25; B25H; B25H1/00; B25H1/0021; B25H1/0028; B66; B66D; B66D3/00; B66D3/12; F; F16; F16F; F16F15/00; F16F15/02; F16F15/04; F16F15/06; G; G01; G01G; G01G3/00; G01G3/06; G05; G05G; G05G25/00; G05G2700/00; G05G2700/12; G05G2700/14
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) | 1947-02-14 | 1947-08-16 | 1948-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-02-14 | 1951-08-16 | 1952-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-02-14 | 1955-08-16 | 1956-02-15 | $7700.00 | Window Closed / Lapsed |