Patent US4003369A successfully refreshed from Google Patents.
Patent US1578634A successfully refreshed from Google Patents.
US1578634A
Expired / Lapsed
US
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Clamping and supporting device
Assignee: AT&T Inc
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Filing: 1925-07-31
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Granted: 1926-03-30
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Expires: 1945-07-31
Abstract
No abstract record available.
Inventors
- 👤 Borgmann Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:40
CPC Classifications
F; F16; F16L; F16L3/00; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32114; Y10T403/32131; Y10T403/32155
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) | 1929-03-29 | 1929-09-28 | 1930-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-03-29 | 1933-09-28 | 1934-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-03-29 | 1937-09-28 | 1938-03-30 | $7700.00 | Window Closed / Lapsed |