Patent US1600497A successfully refreshed from Google Patents.
US1600497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latch for electric-switch boxes
Assignee: Trumbull Electric Manufacturing Co
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Filing: 1925-09-23
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Granted: 1926-09-21
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Expires: 1945-09-23
Abstract
No abstract record available.
Inventors
- 👤 Frank T Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:56
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/20; H01H9/28; H01H9/281; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0894; Y10T292/0895; Y10T292/0902; Y10T292/0903
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) | 1929-09-20 | 1930-03-22 | 1930-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-09-20 | 1934-03-22 | 1934-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-09-20 | 1938-03-22 | 1938-09-21 | $7700.00 | Window Closed / Lapsed |