US2198543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary valve mechanism
Assignee: LAUTERBACH Corp
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Filing: 1938-10-03
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Granted: 1940-04-23
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Expires: 1958-10-03
Abstract
No abstract record available.
Inventors
- 👤 Lauterbach John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:50
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/22; F16K3/24; F16K3/26; B; B28; B28B; B28B7/00; B28B7/36; B29; B29C; B29C43/00; B29C43/02; B29C43/04; B29C43/06; B29C43/08; B29C43/32; B29C43/34; B29C43/36; B29C43/42; B29C43/50; B30; B30B; B30B11/00; B30B11/02; B30B11/08; B29C2043/3272; B29C2043/3283; B29C2043/3676; B29C2043/3678; B29C2043/3684; B29C2043/3689; B29L; B29L2001/00; B29L2031/00; B29L2031/56; B29L2031/565; Y; Y10; Y10S; Y10S425/00; Y10S425/058; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86268; Y10T137/86389; Y10T137/86405; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/86638; Y10T137/86646; Y10T137/86662; Y10T137/87048
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) | 1943-04-23 | 1943-10-23 | 1944-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-23 | 1947-10-23 | 1948-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-23 | 1951-10-23 | 1952-04-23 | $7700.00 | Window Closed / Lapsed |