US1994095A
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Assignee: Individual
•
Filing: 1934-01-10
•
Granted: 1935-03-12
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Expires: 1954-01-10
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:37
CPC Classifications
E; E05; E05B; E05B15/00; E05B15/06; E05B19/00; E05B19/0017; E05B19/0041; E05B19/0047; E05B53/00; E05B63/00; E05B63/14; Y; Y10; Y10S; Y10S70/00; Y10S70/13; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5246; Y10T70/5248; Y10T70/527; Y10T70/5279; Y10T70/5296; Y10T70/5319; Y10T70/5341; Y10T70/70; Y10T70/7441; Y10T70/778; Y10T70/7791; Y10T70/7842; Y10T70/7847; Y10T70/7853; Y10T70/7881
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) | 1938-03-11 | 1938-09-10 | 1939-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-03-11 | 1942-09-10 | 1943-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-03-11 | 1946-09-10 | 1947-03-12 | $7700.00 | Window Closed / Lapsed |