US3531204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical enclosures of the interferometer type
Assignee: Technical Operations Inc
•
Filing: 1966-11-08
•
Granted: 1970-09-29
•
Expires: 1986-11-08
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Holland
- 👤 Willard E Buck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:30
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2769371A
Cited
US3286193A
Cited
US3247467A
Cited
US3274512A
Cited
US3293565A
Cited
US3437398A
Cited
US3402633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |