US2435697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of assembling sheet metal parts
Assignee: Walker Manufacturing Co
•
Filing: 1943-11-06
•
Granted: 1948-02-10
•
Expires: 1963-11-06
Abstract
No abstract record available.
Inventors
- 👤 Walter H Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:12
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N2450/00; F01N2450/20; F01N2450/22; F01N2470/00; F01N2470/02; F01N2470/04; F01N2490/00; F01N2490/08; F01N2490/15; F01N2490/155; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49398
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1091462A
Cited
US1272581A
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US1781297A
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US1907656A
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US1949074A
Cited
US2099887A
Cited
US2251880A
Cited
US2357791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-09 | 1951-08-11 | 1952-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-09 | 1955-08-11 | 1956-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-09 | 1959-08-11 | 1960-02-10 | $7700.00 | Window Closed / Lapsed |