Patent US2621094A successfully refreshed from Google Patents.
US2621094A
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US
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Clamp structure for adjustable drafting tables
Assignee: Individual
•
Filing: 1951-04-09
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Granted: 1952-12-09
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Expires: 1971-04-09
Abstract
No abstract record available.
Inventors
- 👤 Robert M Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:51
CPC Classifications
A; A47; A47B; A47B27/00; A47B27/02; F; F21; F21V; F21V9/00; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7018; Y10T403/7062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US672573A
Cited
US937480A
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US1053357A
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US1079487A
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US1372261A
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US1662675A
Cited
GB337196A
Cited
US1862237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |