Birchtech Corp Com Watch

EX-4.1

from 10-K 1 page Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934

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EX-4.1

from 10-K 2 pages Description of the Registrant’s Securities Registered Pursuant to Section 12 of the Securities Exchange Act of 1934

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EX-4.4

from 10KSB 3 pages Form of Demand Promissory Note

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EX-4.6

from 10QSB 1 page Indenture or similar

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EX-4.5

from 10QSB 1 page Indenture or similar

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EX-4.4

from 10QSB 1 page Indenture or similar

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EX-4.3

from 10QSB 1 page Indenture or similar

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EX-4.2

from 10QSB 1 page Indenture or similar

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EX-4.1

from 10QSB 1 page Indenture or similar

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EX-4.5

from 10QSB 1 page Indenture or similar

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EX-4.3

from 10QSB 1 page Indenture or similar

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EX-4.3

from 10QSB 1 page Indenture or similar

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EX-4.2

from 10QSB 1 page Indenture or similar

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EX-4.1

from 10QSB 1 page Indenture or similar

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EX-4.1

from 8-K ~20 pages Indenture or similar

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EX-4.2

from 8-K 1 page Indenture or similar

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EX-4.1

from 8-K ~10 pages Indenture or similar

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