Patent US2046914A successfully refreshed from Google Patents.
US2046914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hard ferrous-lined tube
Assignee: IND RES LAB Ltd
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Filing: 1935-05-17
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Granted: 1936-07-07
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Expires: 1955-05-17
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Kormann
- 👤 Walter F Hirsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:48
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/011; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12958; Y10T428/12972
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) | 1939-07-07 | 1940-01-06 | 1940-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-07-07 | 1944-01-06 | 1944-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-07-07 | 1948-01-06 | 1948-07-07 | $7700.00 | Window Closed / Lapsed |