US1989955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joining separate bodies
Assignee: Library and Archives Canada
•
Filing: 1932-05-18
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Granted: 1935-02-05
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Expires: 1952-05-18
Abstract
No abstract record available.
Inventors
- 👤 Hugh S Van Patter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:26
CPC Classifications
B; B23; B23P; B23P11/00; B23P11/005; F; F16; F16B; F16B17/00; F16B13/00; F16B13/04; F16B13/08; F16B13/0858; Y; Y10; Y10S; Y10S277/00; Y10S277/91; Y10S277/925; Y10T; Y10T24/00; Y10T24/39; Y10T24/398; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49298; Y10T29/49314; Y10T29/49826; Y10T29/49908; Y10T29/49938; Y10T29/49947; Y10T29/49959; Y10T29/49966; Y10T29/49968; Y10T403/00; Y10T403/49; Y10T403/4958; Y10T403/70; Y10T403/7075; Y10T403/7077
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) | 1938-02-04 | 1938-08-06 | 1939-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-02-04 | 1942-08-06 | 1943-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-02-04 | 1946-08-06 | 1947-02-05 | $7700.00 | Window Closed / Lapsed |