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US2073109A
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Assignee: Individual
•
Filing: 1936-08-12
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Granted: 1937-03-09
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Expires: 1956-08-12
Abstract
No abstract record available.
Inventors
- 👤 Harry R Kirkwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:19
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/0017; E05B15/00; E05B15/10; E05B15/101; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0999; Y10T292/1005; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5372; Y10T70/5531; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7661
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) | 1940-03-08 | 1940-09-07 | 1941-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-03-08 | 1944-09-07 | 1945-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-03-08 | 1948-09-07 | 1949-03-09 | $7700.00 | Window Closed / Lapsed |