Patent US2530275A successfully refreshed from Google Patents.
US1889778A
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US
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Compression coupling
Assignee: Individual
•
Filing: 1928-11-05
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Granted: 1932-12-06
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Expires: 1948-11-05
Abstract
No abstract record available.
Inventors
- 👤 August C Dobrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:40
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/08; F16L19/10; F16L19/14; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/4979; Y10T29/49826; Y10T29/49908; Y10T29/49925
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) | 1935-12-06 | 1936-06-06 | 1936-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-12-06 | 1940-06-06 | 1940-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-12-06 | 1944-06-06 | 1944-12-06 | $7700.00 | Window Closed / Lapsed |