US2840400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamping structure for tubular bars
Assignee: Individual
•
Filing: 1952-11-28
•
Granted: 1958-06-24
•
Expires: 1972-11-28
Abstract
No abstract record available.
Inventors
- 👤 Azzo Errol P D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:42
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/38; E04B1/58; E04B1/5825; E04B1/5837; E04B1/585; E04F; E04F10/00; E04F10/02; E04H; E04H15/00; E04H15/32; F; F16; F16B; F16B2/00; F16B2/02; F16B2/06; F16B2/065; F16B7/00; F16B7/04; F16B7/044; F16B7/048; F16B7/0493; E04B2001/5875; E04B2001/5887; Y; Y10; Y10T; Y10T403/00; Y10T403/34; Y10T403/341; Y10T403/342; Y10T403/70; Y10T403/7041
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |