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US2869909A
Expired / Lapsed
US
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Assignee: McGraw Edison Co
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Filing: 1955-05-11
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Granted: 1959-01-20
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Expires: 1975-05-11
Abstract
No abstract record available.
Inventors
- 👤 Donald W Harling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:30
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/08; F21S8/085; F21S8/086; E; E05; E05C; E05C3/00; E05C3/12; E05C3/16; E05C3/22; E05C3/24; F21V; F21V17/00; F21V17/10; F21V17/20; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0911; Y10T292/0926; Y10T292/0928; Y10T292/0932; Y10T292/1043; Y10T292/1051; Y10T292/1052; Y10T292/1059; Y10T292/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |