US1701932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door-latch structure
Assignee: Chicago Railway Equipment Co
•
Filing: 1928-05-02
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Granted: 1929-02-12
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Expires: 1948-05-02
Abstract
No abstract record available.
Inventors
- 👤 Roy A Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:13
CPC Classifications
E; E05; E05B; E05B83/00; E05B83/02; Y; Y10; Y10T; Y10T292/00; Y10T292/03; Y10T292/08; Y10T292/0801; Y10T292/0825; Y10T292/0826; Y10T292/0828; Y10T292/0833; Y10T292/0834; Y10T292/0836; Y10T292/0845; Y10T292/0848; Y10T292/0849; Y10T292/0859; Y10T292/0911; Y10T292/0937; Y10T292/0938; Y10T292/0943; Y10T292/14
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) | 1932-02-12 | 1932-08-13 | 1933-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-02-12 | 1936-08-13 | 1937-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-02-12 | 1940-08-13 | 1941-02-12 | $7700.00 | Window Closed / Lapsed |