Patent US4461656A successfully refreshed from Google Patents.
Patent US1867236A successfully refreshed from Google Patents.
US1867236A
Expired / Lapsed
US
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Gas sealed gland
Assignee: BBC Brown Boveri AG Germany
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Filing: 1927-04-25
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Granted: 1932-07-12
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Expires: 1947-04-25
Abstract
No abstract record available.
Inventors
- 👤 Willem Van Rijswijk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:44
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/02; F01D11/04; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/102; F04D29/104; F16; F16J; F16J15/00; F16J15/16; F16J15/40; Y; Y10; Y10S; Y10S277/00; Y10S277/926
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) | 1935-07-12 | 1936-01-11 | 1936-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-07-12 | 1940-01-11 | 1940-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-07-12 | 1944-01-11 | 1944-07-12 | $7700.00 | Window Closed / Lapsed |