US1850323A
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Assignee: Yale and Towne Manufacturing Co
•
Filing: 1929-08-23
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Granted: 1932-03-22
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Expires: 1949-08-23
Abstract
No abstract record available.
Inventors
- 👤 Frederic K Heyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:01
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/38; B21D53/42; Y; Y10; Y10S; Y10S16/00; Y10S16/42; Y10S70/00; Y10S70/75; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49861; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7588; Y10T70/7593; Y10T70/7599; Y10T70/7667; Y10T70/7689; Y10T70/7695
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) | 1935-03-22 | 1935-09-21 | 1936-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-03-22 | 1939-09-21 | 1940-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-03-22 | 1943-09-21 | 1944-03-22 | $7700.00 | Window Closed / Lapsed |