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US3406085A Expired / Lapsed US ⏱️ 0.0 years remaining

Photochromic window

Assignee: Corning Glass Works
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Filing: 1964-05-11
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Granted: 1968-10-15
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Expires: 1984-05-11
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Abstract

No abstract record available.

Inventors

  • 👤 Donald N Brown
  • 👤 Thomas G O'leary

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 15:31
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/22; G02B5/23; C; C03; C03C; C03C17/00; C03C17/02; C03C3/00; C03C3/04; C03C3/076; C03C3/11; C03C3/112; C03C3/115; C03C3/118; C03C4/00; C03C4/04; C03C4/06; C03C4/08; C03C4/085; E; E06; E06B; E06B3/00; E06B3/66; E06B3/67; E06B3/6715; E06B3/6722; E06B7/00; E06B7/28; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/905

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US1957279A Cited
US2186203A Cited
US2444976A Cited
US2856303A Cited
US2964427A Cited
US3208860A Cited
US3278319A Cited
US3269267A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1971-10-15 1972-04-15 1972-10-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1975-10-15 1976-04-15 1976-10-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1979-10-15 1980-04-15 1980-10-15 $7700.00 Window Closed / Lapsed

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