Patent US2654819A successfully refreshed from Google Patents.
US2654819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocell
Assignee: Individual
•
Filing: 1952-03-07
•
Granted: 1953-10-06
•
Expires: 1972-03-07
Abstract
No abstract record available.
Inventors
- 👤 Oran T Mcilvaine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:16
CPC Classifications
H; H10; H10F; H10F30/00; H10F30/20; H10F39/00; H10F39/10; H10F39/107; H10W; H10W72/00; H10W74/00; H10W74/40; H10W74/43; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169; Y10T428/00; Y10T428/12; Y10T428/12389; Y10T428/12396; Y10T428/12486; Y10T428/12493; Y10T428/12528; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/12597; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/24884
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2256642A
Cited
US2305576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |