US3522143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phototropic units
Assignee: Pilkington North America Inc
•
Filing: 1966-08-18
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Granted: 1970-07-28
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Expires: 1986-08-18
Abstract
No abstract record available.
Inventors
- 👤 Theodore J Motter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:55
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10165; B32B17/10431; B32B17/10467; B32B17/10486; B32B17/10174; B32B17/1055; B32B17/10761; C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0041; C08K5/0091; C09; C09B; C09B50/00; G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/3163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2693492A
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US2710274A
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US3351518A
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US3361706A
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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) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |