US3502387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telescope system
Assignee: DORIS J HADLEY
•
Filing: 1966-07-19
•
Granted: 1970-03-24
•
Expires: 1986-07-19
Abstract
No abstract record available.
Inventors
- 👤 Emerson E Hadley
- 👤 Doris J Hadley
- 👤 Emerson Rea Hadley
- 👤 Joanne B Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:00
CPC Classifications
G; G02; G02B; G02B23/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
NL35519C
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US471708A
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US749754A
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US3118340A
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GB146373A
Cited
US1428935A
Cited
US2366410A
Cited
DE880503C
Cited
GB720087A
Cited
US2784256A
Cited
FR1327649A
Cited
US3257728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |