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Patent US1553188A successfully refreshed from Google Patents.
US1553188A
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Locking means for electric-switch boxes
Assignee: CHARLES F A HEITKAMP
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Filing: 1924-07-31
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Granted: 1925-09-08
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Expires: 1944-07-31
Abstract
No abstract record available.
Inventors
- 👤 Sauton George Hamilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:13
CPC Classifications
G; G09; G09F; G09F3/00; G09F3/02; G09F3/03; G09F3/0305; G09F3/0347; G09F3/0358; Y; Y10; Y10S; Y10S411/00; Y10S411/918; Y10T; Y10T292/00; Y10T292/48; Y10T292/4945; Y10T292/495; Y10T292/496; Y10T292/513; Y10T292/528
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) | 1928-09-07 | 1929-03-09 | 1929-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-09-07 | 1933-03-09 | 1933-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-09-07 | 1937-03-09 | 1937-09-08 | $7700.00 | Window Closed / Lapsed |