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US1776697A
Expired / Lapsed
US
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Multiple sending and receiving device for pneumatic-tube systems
Assignee: Western Union Telegraph Co
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Filing: 1929-11-26
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Granted: 1930-09-23
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Expires: 1949-11-26
Abstract
No abstract record available.
Inventors
- 👤 William V Mcguinness
- 👤 John M Chulstrom
- 👤 William H Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:22
CPC Classifications
B; B65; B65G; B65G51/00; B65G51/04; B65G51/36; B65G51/40; B65G51/22
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) | 1933-09-22 | 1934-03-24 | 1934-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-09-22 | 1938-03-24 | 1938-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-09-22 | 1942-03-24 | 1942-09-23 | $7700.00 | Window Closed / Lapsed |