US2003399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door operator
Assignee: Richards Wilcox Manufacturing Co
•
Filing: 1932-05-02
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Granted: 1935-06-04
•
Expires: 1952-05-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Tamsitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:30
CPC Classifications
B; B66; B66B; B66B13/00; B66B13/02; B66B13/06; B66B13/08; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1051; Y10T292/1052
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) | 1938-06-03 | 1938-12-03 | 1939-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-06-03 | 1942-12-03 | 1943-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-06-03 | 1946-12-03 | 1947-06-04 | $7700.00 | Window Closed / Lapsed |