Patent US1645700A successfully refreshed from Google Patents.
US1645700A
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US
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Self-cleaning port
Assignee: Parks Cramer Co
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Filing: 1924-09-09
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Granted: 1927-10-18
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Expires: 1944-09-09
Abstract
No abstract record available.
Inventors
- 👤 William B Hodge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:45
CPC Classifications
G; G01; G01K; G01K5/00; G01K5/32; G01K5/42; G01L; G01L19/00; G01L19/08; G01L19/12; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4273; Y10T137/4336; Y10T137/4343; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/7768; Y10T137/7781; Y10T137/7793; Y10T137/7805
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) | 1930-10-17 | 1931-04-18 | 1931-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-10-17 | 1935-04-18 | 1935-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-10-17 | 1939-04-18 | 1939-10-18 | $7700.00 | Window Closed / Lapsed |