US2727984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latch device for closed type luminaire
Assignee: McGraw Electric Co
•
Filing: 1950-09-11
•
Granted: 1955-12-20
•
Expires: 1970-09-11
Abstract
No abstract record available.
Inventors
- 👤 Robert L Smythe
- 👤 Donald W Harling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:17
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/10; F21V17/20; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0876; Y10T292/0883
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1653280A
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US994427A
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US1269467A
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US1335958A
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US1848276A
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US2309279A
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US2434241A
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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) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |