Patent US2693015A successfully refreshed from Google Patents.
US2693015A
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US
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Clamp for chemical apparatus
Assignee: Individual
•
Filing: 1950-03-08
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Granted: 1954-11-02
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Expires: 1970-03-08
Abstract
No abstract record available.
Inventors
- 👤 Freddie B Richards
- 👤 Roger W Mcbrien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:21
CPC Classifications
B; B01; B01L; B01L9/00; B01L9/50; Y; Y10; Y10T; Y10T24/00; Y10T24/21; Y10T24/2191; Y10T24/44; Y10T24/44239
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US20711A
Cited
US1127558A
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US1147625A
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US1161402A
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US1842545A
Cited
US2124006A
Cited
US2452891A
Cited
US2498934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |